397177137 has 48 divisors (see below), whose sum is σ = 696833280. Its totient is φ = 212806656.

The previous prime is 397177117. The next prime is 397177153. The reversal of 397177137 is 731771793.

It is not a de Polignac number, because 397177137 - 2⁷ = 397177009 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 397177092 and 397177101.

It is not an unprimeable number, because it can be changed into a prime (397177117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 383973 + ... + 385005.

It is an arithmetic number, because the mean of its divisors is an integer number (14517360).

Almost surely, 2^397177137 is an apocalyptic number.

It is an amenable number.

397177137 is a deficient number, since it is larger than the sum of its proper divisors (299656143).

397177137 is a wasteful number, since it uses less digits than its factorization.

397177137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422 (or 1419 counting only the distinct ones).

The product of its digits is 194481, while the sum is 45.

The square root of 397177137 is about 19929.3034750339. The cubic root of 397177137 is about 735.0689536864.

The spelling of 397177137 in words is "three hundred ninety-seven million, one hundred seventy-seven thousand, one hundred thirty-seven".