odd, composite · 209th positive integer
The number 209
209 is an odd composite number. It is the 209th positive integer.
Quick reference
| Prime factorization | 11 × 19 |
| Divisors | 1, 11, 19, 209 |
| Binary | 11010001 |
| Hexadecimal | 0xD1 |
| Roman numeral | CCIX |
| Digit sum | 11 |
| Properties | odd, composite |
Reading 209 in NumGrid context
For 209, 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.
Every number on this page links back to classical number theory plus NumGrid solver-derived puzzle statistics; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
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 209 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 209 a prime number?
No. 209 is composite. Its prime factorization is 11 × 19.
What are the factors of 209?
The factors (divisors) of 209 are 1, 11, 19, 209.
What is 209 in binary?
209 in binary is 11010001. In hexadecimal it's D1.
What is 209 as a Roman numeral?
209 in Roman numerals is CCIX.
What's the digit sum of 209?
Adding the digits of 209: 2 + 0 + 9 = 11.