397131468 has 24 divisors (see below), whose sum is σ = 931446768. Its totient is φ = 131690496.

The previous prime is 397131467. The next prime is 397131473. The reversal of 397131468 is 864131793.

It is not an unprimeable number, because it can be changed into a prime (397131467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83421 + ... + 88052.

It is an arithmetic number, because the mean of its divisors is an integer number (38810282).

Almost surely, 2^397131468 is an apocalyptic number.

It is an amenable number.

397131468 is an abundant number, since it is smaller than the sum of its proper divisors (534315300).

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

397131468 is a wasteful number, since it uses less digits than its factorization.

397131468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171673 (or 171671 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 397131468 is about 19928.1576669797. The cubic root of 397131468 is about 735.0407788935.

The spelling of 397131468 in words is "three hundred ninety-seven million, one hundred thirty-one thousand, four hundred sixty-eight".