397945584 has 30 divisors (see below), whose sum is σ = 1113695336. Its totient is φ = 132648480.

The previous prime is 397945577. The next prime is 397945591. The reversal of 397945584 is 485549793.

It is an interprime number because it is at equal distance from previous prime (397945577) and next prime (397945591).

It is a self number, because there is not a number n which added to its sum of digits gives 397945584.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1381612 + ... + 1381899.

Almost surely, 2^397945584 is an apocalyptic number.

It is an amenable number.

397945584 is an abundant number, since it is smaller than the sum of its proper divisors (715749752).

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

397945584 is a wasteful number, since it uses less digits than its factorization.

397945584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763525 (or 2763516 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The square root of 397945584 is about 19948.5734828333. The cubic root of 397945584 is about 735.5427117640.

The spelling of 397945584 in words is "three hundred ninety-seven million, nine hundred forty-five thousand, five hundred eighty-four".