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 |
Reading 441 in NumGrid context
For 441, the underlying data on this page comes from classical number theory plus NumGrid solver-derived puzzle statistics. The breakdown above is the federal record; the paragraphs below add the per-entity context that makes the headline numbers usable for a real decision rather than just a data lookup.
The methodology behind every numeric value on this page is publicly documented on the classical number theory plus NumGrid solver-derived puzzle statistics portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for 441 is typically a peer within positive integers within the NumGrid target pool with similar size, similar exposure, or similar geography — not the national-level summary alone.
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.