397884408 has 32 divisors (see below), whose sum is σ = 1029013200. Its totient is φ = 128054528.

The previous prime is 397884407. The next prime is 397884503. The reversal of 397884408 is 804488793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397884407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285141 + ... + 286532.

Almost surely, 2^397884408 is an apocalyptic number.

It is an amenable number.

397884408 is an abundant number, since it is smaller than the sum of its proper divisors (631128792).

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

397884408 is a wasteful number, since it uses less digits than its factorization.

397884408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571711 (or 571707 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The square root of 397884408 is about 19947.0400811750. The cubic root of 397884408 is about 735.5050182796.

The spelling of 397884408 in words is "three hundred ninety-seven million, eight hundred eighty-four thousand, four hundred eight".