397130930 has 64 divisors (see below), whose sum is σ = 855671040. Its totient is φ = 129825024.

The previous prime is 397130917. The next prime is 397130933. The reversal of 397130930 is 39031793.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (397130933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167312 + ... + 169668.

It is an arithmetic number, because the mean of its divisors is an integer number (13369860).

Almost surely, 2^397130930 is an apocalyptic number.

397130930 is an abundant number, since it is smaller than the sum of its proper divisors (458540110).

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

397130930 is a wasteful number, since it uses less digits than its factorization.

397130930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483.

The product of its (nonzero) digits is 15309, while the sum is 35.

The square root of 397130930 is about 19928.1441684869. The cubic root of 397130930 is about 735.0404469697.

The spelling of 397130930 in words is "three hundred ninety-seven million, one hundred thirty thousand, nine hundred thirty".