392477972 has 12 divisors (see below), whose sum is σ = 686980980. Its totient is φ = 196197696.

The previous prime is 392477941. The next prime is 392477977. The reversal of 392477972 is 279774293.

It can be written as a sum of positive squares in 2 ways, for example, as 370331536 + 22146436 = 19244^2 + 4706^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 392477972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (392477977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23054 + ... + 36282.

It is an arithmetic number, because the mean of its divisors is an integer number (57248415).

Almost surely, 2^392477972 is an apocalyptic number.

It is an amenable number.

392477972 is a deficient number, since it is larger than the sum of its proper divisors (294503008).

392477972 is a wasteful number, since it uses less digits than its factorization.

392477972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20650 (or 20648 counting only the distinct ones).

The product of its digits is 1333584, while the sum is 50.

The square root of 392477972 is about 19811.0568117907. The cubic root of 392477972 is about 732.1584779349.

The spelling of 392477972 in words is "three hundred ninety-two million, four hundred seventy-seven thousand, nine hundred seventy-two".