Compare 490 vs 499
| Property | 490 | 499 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 21 × 51 × 72 | 4991 |
| Prime factorization | 2 × 5 × 7 × 7 | 499 |
| Divisors count | 12 | 2 |
| Divisors | 1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490 | 1, 499 |
| Number of properties | 0 | 6 |
| Chen primes | 67th | |
| Cousin primes (1st member) | 27th | |
| Harmonic primes | 39th | |
| Isolated primes | 48th | |
| Long primes | 35th | |
| Primes | 95th | |
| Roman numberals | CDXC | CDXCIX |
| Base 2 | 1111010102 | 1111100112 |
| Base 3 | 2000113 | 2001113 |
| Base 4 | 132224 | 133034 |
| Base 5 | 34305 | 34445 |
| Base 6 | 21346 | 21516 |
| Base 7 | 13007 | 13127 |
| Base 8 | 7528 | 7638 |
| Base 9 | 6049 | 6149 |
| Base 10 | 49010 | 49910 |
| Base 11 | 40611 | 41411 |
| Base 12 | 34a12 | 35712 |
| Base 13 | 2b913 | 2c513 |
| Base 14 | 27014 | 27914 |
| Base 15 | 22a15 | 23415 |
| Base 16 | 1ea16 | 1f316 |