475209 has 24 divisors (see below), whose sum is σ = 827840. Its totient is φ = 256608.

The previous prime is 475207. The next prime is 475219. The reversal of 475209 is 902574.

It is not a de Polignac number, because 475209 - 2¹ = 475207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (475207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 999 + ... + 1395.

2⁴⁷⁵²⁰⁹ is an apocalyptic number.

It is an amenable number.

475209 is a deficient number, since it is larger than the sum of its proper divisors (352631).

475209 is a wasteful number, since it uses less digits than its factorization.

475209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 475209 is about 689.3540454658. The cubic root of 475209 is about 78.0359794562.

The spelling of 475209 in words is "four hundred seventy-five thousand, two hundred nine".