397256164 has 6 divisors (see below), whose sum is σ = 695198294. Its totient is φ = 198628080.

The previous prime is 397256149. The next prime is 397256183. The reversal of 397256164 is 461652793.

It can be written as a sum of positive squares in only one way, i.e., 381889764 + 15366400 = 19542^2 + 3920^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 397256164.

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 as a sum of consecutive naturals, namely, 49657017 + ... + 49657024.

Almost surely, 2^397256164 is an apocalyptic number.

It is an amenable number.

397256164 is a deficient number, since it is larger than the sum of its proper divisors (297942130).

397256164 is a wasteful number, since it uses less digits than its factorization.

397256164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99314045 (or 99314043 counting only the distinct ones).

The product of its digits is 272160, while the sum is 43.

The square root of 397256164 is about 19931.2860598608. The cubic root of 397256164 is about 735.1177030868.

The spelling of 397256164 in words is "three hundred ninety-seven million, two hundred fifty-six thousand, one hundred sixty-four".