Number dictionary · Exact arithmetic
749: factors and number facts
seven hundred forty-nine is an odd number and is composite. Its 4 positive divisors form 2 factor pairs.
Number JD Editorial Team · Updated 2026-10-08
- In words
- seven hundred forty-nine
- Roman numeral
- DCCXLIX
- Prime factorization
- 7 × 107
- Digital root
- 2
All factors of 749
A positive factor divides 749 with no remainder. In ascending order, the complete list is:
1, 7, 107, 749
Factor pairs
- 1 × 749 = 749
- 7 × 107 = 749
Each pair describes an arrangement of 749 items into equal rows. The pairs have different row and column counts; 749 cannot make a square array of whole items.
Divisor totals
- Positive divisors
- 4
- Sum of all divisors
- 864
- Sum excluding 749
- 115
- Classification
- deficient
749 is deficient because its proper divisors add to 115, which is less than 749.
Prime factorization of 749
749 = 7 × 107
Repeated division, step by step
- 749 ÷ 7 = 107
- 107 ÷ 107 = 1
Multiply the prime divisors in these steps to reconstruct 749. Each prime in this factorization occurs once. The divisor-count calculation is (1 + 1) × (1 + 1) = 4.
The preceding prime is 743. The next larger prime is 751. The factor list above explains why 749 is composite.
Learn the factorization method749 in words, Roman numerals and other bases
| Representation | Value |
|---|---|
| English (US style) | seven hundred forty-nine |
| Roman numeral | DCCXLIX |
| Binary (base 2) | 1011101101 |
| Octal (base 8) | 1355 |
| Decimal (base 10) | 749 |
| Hexadecimal (base 16) | 2ED |
Check the binary conversion
Read 1011101101 from right to left using place values 1, 2, 4, 8 and successive powers of two. Keep the values whose bit is 1:
512 + 128 + 64 + 32 + 8 + 4 + 1 = 749
Check the hexadecimal conversion
2 × 16^2 + 14 × 16^1 + 13 × 16^0 = 749
Hexadecimal uses A through F for digit values 10 through 15. These notations represent the same quantity; changing the base does not change the integer.
Square, cube and square root of 749
- 749 squared
- 749 × 749 = 561,001
- 749 cubed
- 749 × 749 × 749 = 420,189,749
- Square root
- ≈ 27.367864
- Simplified radical
- √749
749 lies between 729 (27²) and 784 (28²), so it is not a perfect square. It is not a perfect cube.
749 is not triangular: no positive whole-number k satisfies k(k + 1) / 2 = 749.
Distinguish a square from a square rootMultiplication table for 749
These are the first twelve positive multiples. Unlike the finite factor list, the sequence of multiples continues without an upper limit.
Divisibility checks
| Divide by | Whole quotient | Remainder | Divides exactly? |
|---|---|---|---|
| 2 | 374 | 1 | No |
| 3 | 249 | 2 | No |
| 4 | 187 | 1 | No |
| 5 | 149 | 4 | No |
| 6 | 124 | 5 | No |
| 7 | 107 | 0 | Yes |
| 8 | 93 | 5 | No |
| 9 | 83 | 2 | No |
| 10 | 74 | 9 | No |
| 11 | 68 | 1 | No |
| 12 | 62 | 5 | No |
For example, 749 = 7 × 107 + 0. A remainder of zero is what makes a divisor a factor.
Digit sum and digital root of 749
749 contains 3 decimal digits. Its digit sum is 7 + 4 + 9 = 20.
- 749: 7 + 4 + 9 = 20
- 20: 2 + 0 = 2
The digital root is 2. Reversing its digits gives 947; it is not a decimal palindrome. Digit patterns depend on the notation being used.
Digital-root arithmetic always finishes at a single digit for a positive integer. Some numerology methods stop at 11, 22 or 33 instead; that is a separate interpretive convention.
Fractions and a worked comparison
As a fraction of 100, 749/100 simplifies to 749/100 by dividing both terms by their greatest common divisor, 1. Its decimal value is 7.49. Because the numerator exceeds the denominator, this value is greater than one.
The greatest common divisor of 749 and 12 is 1. Their least common multiple is 8988. The identity GCD × LCM = 749 × 12 = 8988 checks both results.
Work through GCF and LCMQuestions about 749
What are the factors of 749?
The positive factors are 1, 7, 107, 749. There are 4 factors, including 1 and 749.
Is 749 a prime number?
No. 749 is composite: 7 × 107 = 749.
How do you write 749 in Roman numerals?
749 is DCCXLIX in standard subtractive Roman numeral notation.
What is the binary representation of 749?
749 in decimal is 1011101101 in base 2. Adding its active place values gives 512 + 128 + 64 + 32 + 8 + 4 + 1 = 749.
Methods and reference definitions
Number JD calculates each result from the integer on this page. Positive factors are enumerated in pairs; repeated division gives the prime factorization; place values verify base conversions. Decimal square roots are rounded to six places when irrational.
NUMBER JOURNAL / JD
A reflective note on 749
Meaning varies by tradition and personal experience. One sighting is not evidence of what will happen next.
The digits of 749 add to 20. That arithmetic result is separate from the cultural symbolism of the pattern. If this number matters to you, write down what you noticed and choose one grounded action rather than treating the sighting as a prediction.