390674961 has 16 divisors (see below), whose sum is σ = 579196800. Its totient is φ = 260261424.

The previous prime is 390674953. The next prime is 390674981. The reversal of 390674961 is 169476093.

It is not a de Polignac number, because 390674961 - 2³ = 390674953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390674981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39780 + ... + 48618.

It is an arithmetic number, because the mean of its divisors is an integer number (36199800).

Almost surely, 2^390674961 is an apocalyptic number.

It is an amenable number.

390674961 is a deficient number, since it is larger than the sum of its proper divisors (188521839).

390674961 is a wasteful number, since it uses less digits than its factorization.

390674961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10485 (or 10479 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 390674961 is about 19765.4992600744. The cubic root of 390674961 is about 731.0355984193.

The spelling of 390674961 in words is "three hundred ninety million, six hundred seventy-four thousand, nine hundred sixty-one".