397984376 has 16 divisors (see below), whose sum is σ = 764421840. Its totient is φ = 194138560.

The previous prime is 397984373. The next prime is 397984381. The reversal of 397984376 is 673489793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397984373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606356 + ... + 607011.

It is an arithmetic number, because the mean of its divisors is an integer number (47776365).

Almost surely, 2^397984376 is an apocalyptic number.

It is an amenable number.

397984376 is a deficient number, since it is larger than the sum of its proper divisors (366437464).

397984376 is a wasteful number, since it uses less digits than its factorization.

397984376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213414 (or 1213410 counting only the distinct ones).

The product of its digits is 6858432, while the sum is 56.

The square root of 397984376 is about 19949.5457592397. The cubic root of 397984376 is about 735.5666113849.

The spelling of 397984376 in words is "three hundred ninety-seven million, nine hundred eighty-four thousand, three hundred seventy-six".