397790684 has 12 divisors (see below), whose sum is σ = 737082864. Its totient is φ = 187195584.

The previous prime is 397790671. The next prime is 397790689. The reversal of 397790684 is 486097793.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397790689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2924864 + ... + 2924999.

It is an arithmetic number, because the mean of its divisors is an integer number (61423572).

Almost surely, 2^397790684 is an apocalyptic number.

397790684 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

397790684 is a deficient number, since it is larger than the sum of its proper divisors (339292180).

397790684 is a wasteful number, since it uses less digits than its factorization.

397790684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5849884 (or 5849882 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 53.

The square root of 397790684 is about 19944.6906218171. The cubic root of 397790684 is about 735.4472629079.

The spelling of 397790684 in words is "three hundred ninety-seven million, seven hundred ninety thousand, six hundred eighty-four".