390427492 has 72 divisors (see below), whose sum is σ = 869092224. Its totient is φ = 152083008.

The previous prime is 390427459. The next prime is 390427517. The reversal of 390427492 is 294724093.

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, 169573 + ... + 171859.

Almost surely, 2^390427492 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 390427492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (434546112).

390427492 is an abundant number, since it is smaller than the sum of its proper divisors (478664732).

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

390427492 is a wasteful number, since it uses less digits than its factorization.

390427492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385 (or 2376 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 390427492 is about 19759.2381432078. The cubic root of 390427492 is about 730.8812101783.

The spelling of 390427492 in words is "three hundred ninety million, four hundred twenty-seven thousand, four hundred ninety-two".