390634692 has 48 divisors (see below), whose sum is σ = 1047752832. Its totient is φ = 110960640.

The previous prime is 390634663. The next prime is 390634703. The reversal of 390634692 is 296436093.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1092 + ... + 27972.

It is an arithmetic number, because the mean of its divisors is an integer number (21828184).

Almost surely, 2^390634692 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 390634692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (523876416).

390634692 is an abundant number, since it is smaller than the sum of its proper divisors (657118140).

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

390634692 is a wasteful number, since it uses less digits than its factorization.

390634692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27068 (or 27066 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 42.

The square root of 390634692 is about 19764.4805648922. The cubic root of 390634692 is about 731.0104802803.

The spelling of 390634692 in words is "three hundred ninety million, six hundred thirty-four thousand, six hundred ninety-two".