odd, composite · 39th positive integer
The number 39
39 is an odd composite number. It is the 39th positive integer.
Quick reference
| Prime factorization | 3 × 13 |
| Divisors | 1, 3, 13, 39 |
| Binary | 100111 |
| Hexadecimal | 0x27 |
| Roman numeral | XXXIX |
| Digit sum | 12 |
| Properties | odd, composite |
Frequently asked
Is 39 a prime number?
No. 39 is composite. Its prime factorization is 3 × 13.
What are the factors of 39?
The factors (divisors) of 39 are 1, 3, 13, 39.
What is 39 in binary?
39 in binary is 100111. In hexadecimal it's 27.
What is 39 as a Roman numeral?
39 in Roman numerals is XXXIX.
What's the digit sum of 39?
Adding the digits of 39: 3 + 9 = 12.