478670931 has 32 divisors (see below), whose sum is σ = 727211520. Its totient is φ = 311062752.

The previous prime is 478670923. The next prime is 478670977. The reversal of 478670931 is 139076874.

It is not a de Polignac number, because 478670931 - 2³ = 478670923 is a prime.

It is a super-2 number, since 2×478670931² = 458251720368813522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (478670831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237976 + ... + 239978.

It is an arithmetic number, because the mean of its divisors is an integer number (22725360).

Almost surely, 2^478670931 is an apocalyptic number.

478670931 is a deficient number, since it is larger than the sum of its proper divisors (248540589).

478670931 is a wasteful number, since it uses less digits than its factorization.

478670931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232 (or 2226 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 478670931 is about 21878.5495634423. The cubic root of 478670931 is about 782.2502033830.

The spelling of 478670931 in words is "four hundred seventy-eight million, six hundred seventy thousand, nine hundred thirty-one".