397397412 has 18 divisors (see below), whose sum is σ = 1004532438. Its totient is φ = 132465792.

The previous prime is 397397393. The next prime is 397397419. The reversal of 397397412 is 214793793.

It can be written as a sum of positive squares in only one way, i.e., 256832676 + 140564736 = 16026^2 + 11856^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (397397419) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5519373 + ... + 5519444.

Almost surely, 2^397397412 is an apocalyptic number.

It is an amenable number.

397397412 is an abundant number, since it is smaller than the sum of its proper divisors (607135026).

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

397397412 is a wasteful number, since it uses less digits than its factorization.

397397412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11038827 (or 11038822 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 397397412 is about 19934.8291189064. The cubic root of 397397412 is about 735.2048186652.

The spelling of 397397412 in words is "three hundred ninety-seven million, three hundred ninety-seven thousand, four hundred twelve".