397856168 has 32 divisors (see below), whose sum is σ = 801005760. Its totient is φ = 184584960.

The previous prime is 397856119. The next prime is 397856177. The reversal of 397856168 is 861658793.

It is a happy 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, 10946 + ... + 30257.

It is an arithmetic number, because the mean of its divisors is an integer number (25031430).

Almost surely, 2^397856168 is an apocalyptic number.

It is an amenable number.

397856168 is an abundant number, since it is smaller than the sum of its proper divisors (403149592).

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

397856168 is a wasteful number, since it uses less digits than its factorization.

397856168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41297 (or 41293 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 53.

The square root of 397856168 is about 19946.3321941654. The cubic root of 397856168 is about 735.4876169501.

The spelling of 397856168 in words is "three hundred ninety-seven million, eight hundred fifty-six thousand, one hundred sixty-eight".