Compare 405 vs 409
| Property | 405 | 409 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 2 | 1 |
| Total factors | 5 | 1 |
| Prime factorization | 34 × 51 | 4091 |
| Prime factorization | 3 × 3 × 3 × 3 × 5 | 409 |
| Divisors count | 10 | 2 |
| Divisors | 1, 3, 5, 9, 15, 27, 45, 81, 135, 405 | 1, 409 |
| Number of properties | 0 | 9 |
| Additive primes | 47th | |
| Centered triangular primes | 5th | |
| Chen primes | 57th | |
| Happy primes | 22nd | |
| Isolated primes | 39th | |
| Lucky primes | 22nd | |
| Primes | 80th | |
| Pythagorean primes | 39th | |
| Ulam primes | 11th | |
| Roman numberals | CDV | CDIX |
| Base 2 | 1100101012 | 1100110012 |
| Base 3 | 1200003 | 1200113 |
| Base 4 | 121114 | 121214 |
| Base 5 | 31105 | 31145 |
| Base 6 | 15136 | 15216 |
| Base 7 | 11167 | 11237 |
| Base 8 | 6258 | 6318 |
| Base 9 | 5009 | 5049 |
| Base 10 | 40510 | 40910 |
| Base 11 | 33911 | 34211 |
| Base 12 | 29912 | 2a112 |
| Base 13 | 25213 | 25613 |
| Base 14 | 20d14 | 21314 |
| Base 15 | 1c015 | 1c415 |
| Base 16 | 19516 | 19916 |