397426332 has 12 divisors (see below), whose sum is σ = 927328136. Its totient is φ = 132475440.

The previous prime is 397426321. The next prime is 397426333. The reversal of 397426332 is 233624793.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397426333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16559419 + ... + 16559442.

Almost surely, 2^397426332 is an apocalyptic number.

It is an amenable number.

397426332 is an abundant number, since it is smaller than the sum of its proper divisors (529901804).

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

397426332 is a wasteful number, since it uses less digits than its factorization.

397426332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33118868 (or 33118866 counting only the distinct ones).

The product of its digits is 163296, while the sum is 39.

The square root of 397426332 is about 19935.5544693394. The cubic root of 397426332 is about 735.2226527082. Note that the first 3 decimals are identical.

The spelling of 397426332 in words is "three hundred ninety-seven million, four hundred twenty-six thousand, three hundred thirty-two".