397693488 has 40 divisors (see below), whose sum is σ = 1041457648. Its totient is φ = 130747392.

The previous prime is 397693477. The next prime is 397693489. The reversal of 397693488 is 884396793.

It is a happy number.

It is a super-2 number, since 2×397693488² = 316320220795212288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (397693489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53245 + ... + 60252.

Almost surely, 2^397693488 is an apocalyptic number.

It is an amenable number.

397693488 is an abundant number, since it is smaller than the sum of its proper divisors (643764160).

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

397693488 is a wasteful number, since it uses less digits than its factorization.

397693488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113581 (or 113575 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 57.

The square root of 397693488 is about 19942.2538345093. The cubic root of 397693488 is about 735.3873584089.

The spelling of 397693488 in words is "three hundred ninety-seven million, six hundred ninety-three thousand, four hundred eighty-eight".