397858944 has 64 divisors (see below), whose sum is σ = 1207794240. Its totient is φ = 113673216.

The previous prime is 397858933. The next prime is 397858987. The reversal of 397858944 is 449858793.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-3 number, since 3×397858944³ (a number of 27 digits) contains 333 as substring.

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, 71319 + ... + 76694.

It is an arithmetic number, because the mean of its divisors is an integer number (18871785).

Almost surely, 2^397858944 is an apocalyptic number.

It is an amenable number.

397858944 is an abundant number, since it is smaller than the sum of its proper divisors (809935296).

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

397858944 is a wasteful number, since it uses less digits than its factorization.

397858944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148037 (or 148025 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 57.

The square root of 397858944 is about 19946.4017807724. The cubic root of 397858944 is about 735.4893275422.

The spelling of 397858944 in words is "three hundred ninety-seven million, eight hundred fifty-eight thousand, nine hundred forty-four".