397009924 has 6 divisors (see below), whose sum is σ = 694767374. Its totient is φ = 198504960.

The previous prime is 397009903. The next prime is 397009933. The reversal of 397009924 is 429900793.

It can be written as a sum of positive squares in only one way, i.e., 200505600 + 196504324 = 14160^2 + 14018^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 49626237 + ... + 49626244.

Almost surely, 2^397009924 is an apocalyptic number.

It is an amenable number.

397009924 is a deficient number, since it is larger than the sum of its proper divisors (297757450).

397009924 is a wasteful number, since it uses less digits than its factorization.

397009924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99252485 (or 99252483 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 397009924 is about 19925.1078792563. The cubic root of 397009924 is about 734.9657836510.

The spelling of 397009924 in words is "three hundred ninety-seven million, nine thousand, nine hundred twenty-four".