397031924 has 24 divisors (see below), whose sum is σ = 720017760. Its totient is φ = 191336544.

The previous prime is 397031917. The next prime is 397031993. The reversal of 397031924 is 429130793.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71927 + ... + 77249.

It is an arithmetic number, because the mean of its divisors is an integer number (30000740).

Almost surely, 2^397031924 is an apocalyptic number.

It is an amenable number.

397031924 is a deficient number, since it is larger than the sum of its proper divisors (322985836).

397031924 is a wasteful number, since it uses less digits than its factorization.

397031924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5999 (or 5997 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 397031924 is about 19925.6599388828. The cubic root of 397031924 is about 734.9793592550.

The spelling of 397031924 in words is "three hundred ninety-seven million, thirty-one thousand, nine hundred twenty-four".