390927792 has 80 divisors (see below), whose sum is σ = 1061519360. Its totient is φ = 123814656.

The previous prime is 390927791. The next prime is 390927809. The reversal of 390927792 is 297729093.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (390927791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73809 + ... + 78927.

It is an arithmetic number, because the mean of its divisors is an integer number (13268992).

Almost surely, 2^390927792 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 390927792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530759680).

390927792 is an abundant number, since it is smaller than the sum of its proper divisors (670591568).

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

390927792 is a wasteful number, since it uses less digits than its factorization.

390927792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5210 (or 5204 counting only the distinct ones).

The product of its (nonzero) digits is 428652, while the sum is 48.

The square root of 390927792 is about 19771.8939912189. The cubic root of 390927792 is about 731.1932645294.

The spelling of 390927792 in words is "three hundred ninety million, nine hundred twenty-seven thousand, seven hundred ninety-two".