397723488 has 48 divisors (see below), whose sum is σ = 1045240560. Its totient is φ = 132420096.

The previous prime is 397723441. The next prime is 397723499. The reversal of 397723488 is 884327793.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×397723488² = 316367945813772288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 397723488.

It is a congruent number.

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, 105378 + ... + 109086.

It is an arithmetic number, because the mean of its divisors is an integer number (21775845).

Almost surely, 2^397723488 is an apocalyptic number.

It is an amenable number.

397723488 is an abundant number, since it is smaller than the sum of its proper divisors (647517072).

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

397723488 is a wasteful number, since it uses less digits than its factorization.

397723488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4839 (or 4831 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 51.

The square root of 397723488 is about 19943.0059920765. The cubic root of 397723488 is about 735.4058492539.

The spelling of 397723488 in words is "three hundred ninety-seven million, seven hundred twenty-three thousand, four hundred eighty-eight".