397961208 has 32 divisors (see below), whose sum is σ = 1105448400. Its totient is φ = 132653664.

The previous prime is 397961183. The next prime is 397961219. The reversal of 397961208 is 802169793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 920991 + ... + 921422.

Almost surely, 2^397961208 is an apocalyptic number.

It is an amenable number.

397961208 is an abundant number, since it is smaller than the sum of its proper divisors (707487192).

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

397961208 is a wasteful number, since it uses less digits than its factorization.

397961208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842428 (or 1842418 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 397961208 is about 19948.9650859387. The cubic root of 397961208 is about 735.5523378447.

The spelling of 397961208 in words is "three hundred ninety-seven million, nine hundred sixty-one thousand, two hundred eight".