odd, composite, perfect square · 289th positive integer
The number 289
289 is an odd composite number. It is the 289th positive integer.
Quick reference
| Prime factorization | 17 × 17 |
| Divisors | 1, 17, 289 |
| Binary | 100100001 |
| Hexadecimal | 0x121 |
| Roman numeral | CCLXXXIX |
| Digit sum | 19 |
| Properties | odd, composite, perfect square |
Frequently asked
Is 289 a prime number?
No. 289 is composite. Its prime factorization is 17 × 17.
What are the factors of 289?
The factors (divisors) of 289 are 1, 17, 289.
What is 289 in binary?
289 in binary is 100100001. In hexadecimal it's 121.
What is 289 as a Roman numeral?
289 in Roman numerals is CCLXXXIX.
What's the digit sum of 289?
Adding the digits of 289: 2 + 8 + 9 = 19.