odd, composite, perfect square · 441st positive integer
The number 441
441 is an odd composite number. It is the 441st positive integer.
Quick reference
| Prime factorization | 3 × 3 × 7 × 7 |
| Divisors | 1, 3, 7, 9, 21, 49, 63, 147, 441 |
| Binary | 110111001 |
| Hexadecimal | 0x1B9 |
| Roman numeral | CDXLI |
| Digit sum | 9 |
| Properties | odd, composite, perfect square |
Frequently asked
Is 441 a prime number?
No. 441 is composite. Its prime factorization is 3 × 3 × 7 × 7.
What are the factors of 441?
The factors (divisors) of 441 are 1, 3, 7, 9, 21, 49, 63, 147, 441.
What is 441 in binary?
441 in binary is 110111001. In hexadecimal it's 1B9.
What is 441 as a Roman numeral?
441 in Roman numerals is CDXLI.
What's the digit sum of 441?
Adding the digits of 441: 4 + 4 + 1 = 9.