390390875 has 32 divisors (see below), whose sum is σ = 558544896. Its totient is φ = 266863200.

The previous prime is 390390827. The next prime is 390390881. The reversal of 390390875 is 578093093.

It is not a de Polignac number, because 390390875 - 2⁸ = 390390619 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 439682 + ... + 440568.

It is an arithmetic number, because the mean of its divisors is an integer number (17454528).

Almost surely, 2^390390875 is an apocalyptic number.

390390875 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

390390875 is a deficient number, since it is larger than the sum of its proper divisors (168154021).

390390875 is an equidigital number, since it uses as much as digits as its factorization.

390390875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412 (or 1402 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 390390875 is about 19758.3115422346. The cubic root of 390390875 is about 730.8583604264.

The spelling of 390390875 in words is "three hundred ninety million, three hundred ninety thousand, eight hundred seventy-five".