390912942 has 32 divisors (see below), whose sum is σ = 915312384. Its totient is φ = 108964800.

The previous prime is 390912917. The next prime is 390912947. The reversal of 390912942 is 249219093.

It is a self number, because there is not a number n which added to its sum of digits gives 390912942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390912947) 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, 111784 + ... + 115227.

It is an arithmetic number, because the mean of its divisors is an integer number (28603512).

Almost surely, 2^390912942 is an apocalyptic number.

390912942 is an abundant number, since it is smaller than the sum of its proper divisors (524399442).

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

390912942 is a wasteful number, since it uses less digits than its factorization.

390912942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227064.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 390912942 is about 19771.5184545851. The cubic root of 390912942 is about 731.1840059079.

The spelling of 390912942 in words is "three hundred ninety million, nine hundred twelve thousand, nine hundred forty-two".