475908931 has 16 divisors (see below), whose sum is σ = 522160128. Its totient is φ = 431798400.

The previous prime is 475908883. The next prime is 475908943. The reversal of 475908931 is 139809574.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-475908931 is a prime.

It is a super-2 number, since 2×475908931² = 452978621211125522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (475908131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147546 + ... + 150736.

It is an arithmetic number, because the mean of its divisors is an integer number (32635008).

Almost surely, 2^475908931 is an apocalyptic number.

475908931 is a deficient number, since it is larger than the sum of its proper divisors (46251197).

475908931 is a wasteful number, since it uses less digits than its factorization.

475908931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3522.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 475908931 is about 21815.3370590509. The cubic root of 475908931 is about 780.7427348878.

The spelling of 475908931 in words is "four hundred seventy-five million, nine hundred eight thousand, nine hundred thirty-one".