397539684 has 48 divisors (see below), whose sum is σ = 1047571840. Its totient is φ = 130338720.

The previous prime is 397539683. The next prime is 397539719. The reversal of 397539684 is 486935793.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 397539684.

It is not an unprimeable number, because it can be changed into a prime (397539683) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 23584 + ... + 36759.

Almost surely, 2^397539684 is an apocalyptic number.

It is an amenable number.

397539684 is an abundant number, since it is smaller than the sum of its proper divisors (650032156).

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

397539684 is a wasteful number, since it uses less digits than its factorization.

397539684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60417 (or 60409 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 397539684 is about 19938.3972274604. The cubic root of 397539684 is about 735.2925449368.

The spelling of 397539684 in words is "three hundred ninety-seven million, five hundred thirty-nine thousand, six hundred eighty-four".