392869872 has 120 divisors (see below), whose sum is σ = 1157993840. Its totient is φ = 127526400.

The previous prime is 392869787. The next prime is 392869889. The reversal of 392869872 is 278968293.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 725922 + ... + 726462.

Almost surely, 2^392869872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 392869872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (578996920).

392869872 is an abundant number, since it is smaller than the sum of its proper divisors (765123968).

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

392869872 is a wasteful number, since it uses less digits than its factorization.

392869872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640 (or 587 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 392869872 is about 19820.9452852279. The cubic root of 392869872 is about 732.4020902965.

The spelling of 392869872 in words is "three hundred ninety-two million, eight hundred sixty-nine thousand, eight hundred seventy-two".