397039401 has 24 divisors (see below), whose sum is σ = 648813984. Its totient is φ = 240628320.

The previous prime is 397039397. The next prime is 397039417. The reversal of 397039401 is 104930793.

It is not a de Polignac number, because 397039401 - 2² = 397039397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397039421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71596 + ... + 76941.

It is an arithmetic number, because the mean of its divisors is an integer number (27033916).

Almost surely, 2^397039401 is an apocalyptic number.

It is an amenable number.

397039401 is a deficient number, since it is larger than the sum of its proper divisors (251774583).

397039401 is a wasteful number, since it uses less digits than its factorization.

397039401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148563 (or 148551 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 397039401 is about 19925.8475603925. The cubic root of 397039401 is about 734.9839729950.

The spelling of 397039401 in words is "three hundred ninety-seven million, thirty-nine thousand, four hundred one".