397393874 has 16 divisors (see below), whose sum is σ = 617313312. Its totient is φ = 191734368.

The previous prime is 397393741. The next prime is 397393891. The reversal of 397393874 is 478393793.

It is a happy 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, 20699 + ... + 34974.

It is an arithmetic number, because the mean of its divisors is an integer number (38582082).

Almost surely, 2^397393874 is an apocalyptic number.

397393874 is a deficient number, since it is larger than the sum of its proper divisors (219919438).

397393874 is a wasteful number, since it uses less digits than its factorization.

397393874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55801.

The product of its digits is 3429216, while the sum is 53.

The square root of 397393874 is about 19934.7403795485. The cubic root of 397393874 is about 735.2026368338.

The spelling of 397393874 in words is "three hundred ninety-seven million, three hundred ninety-three thousand, eight hundred seventy-four".