397017438 has 16 divisors (see below), whose sum is σ = 795071376. Its totient is φ = 132166400.

The previous prime is 397017427. The next prime is 397017451. The reversal of 397017438 is 834710793.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 397017438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38163 + ... + 47438.

It is an arithmetic number, because the mean of its divisors is an integer number (49691961).

Almost surely, 2^397017438 is an apocalyptic number.

397017438 is an abundant number, since it is smaller than the sum of its proper divisors (398053938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397017438 is a wasteful number, since it uses less digits than its factorization.

397017438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86379.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 397017438 is about 19925.2964344323. The cubic root of 397017438 is about 734.9704203932.

The spelling of 397017438 in words is "three hundred ninety-seven million, seventeen thousand, four hundred thirty-eight".