odd, composite, perfect square · 49th positive integer
The number 49
49 is an odd composite number. It is the 49th positive integer.
Quick reference
| Prime factorization | 7 × 7 |
| Divisors | 1, 7, 49 |
| Binary | 110001 |
| Hexadecimal | 0x31 |
| Roman numeral | XLIX |
| Digit sum | 13 |
| Properties | odd, composite, perfect square |
Frequently asked
Is 49 a prime number?
No. 49 is composite. Its prime factorization is 7 × 7.
What are the factors of 49?
The factors (divisors) of 49 are 1, 7, 49.
What is 49 in binary?
49 in binary is 110001. In hexadecimal it's 31.
What is 49 as a Roman numeral?
49 in Roman numerals is XLIX.
What's the digit sum of 49?
Adding the digits of 49: 4 + 9 = 13.