397220056 has 16 divisors (see below), whose sum is σ = 747881640. Its totient is φ = 197784960.

The previous prime is 397220041. The next prime is 397220101. The reversal of 397220056 is 650022793.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101086 + ... + 104941.

Almost surely, 2^397220056 is an apocalyptic number.

It is an amenable number.

397220056 is a deficient number, since it is larger than the sum of its proper divisors (350661584).

397220056 is a wasteful number, since it uses less digits than its factorization.

397220056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206274 (or 206270 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 397220056 is about 19930.3802271808. The cubic root of 397220056 is about 735.0954299403.

The spelling of 397220056 in words is "three hundred ninety-seven million, two hundred twenty thousand, fifty-six".