397201808 has 40 divisors (see below), whose sum is σ = 798641592. Its totient is φ = 191213568.

The previous prime is 397201807. The next prime is 397201817. The reversal of 397201808 is 808102793.

It can be written as a sum of positive squares in 4 ways, for example, as 152967424 + 244234384 = 12368^2 + 15628^2 .

It is not an unprimeable number, because it can be changed into a prime (397201801) 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, 53966 + ... + 60882.

Almost surely, 2^397201808 is an apocalyptic number.

It is an amenable number.

397201808 is an abundant number, since it is smaller than the sum of its proper divisors (401439784).

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

397201808 is a wasteful number, since it uses less digits than its factorization.

397201808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7059 (or 7053 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 397201808 is about 19929.9224283488. The cubic root of 397201808 is about 735.0841731851.

The spelling of 397201808 in words is "three hundred ninety-seven million, two hundred one thousand, eight hundred eight".