390879434 has 32 divisors (see below), whose sum is σ = 688988160. Its totient is φ = 164458800.

The previous prime is 390879427. The next prime is 390879443. The reversal of 390879434 is 434978093.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3227 + ... + 28145.

It is an arithmetic number, because the mean of its divisors is an integer number (21530880).

Almost surely, 2^390879434 is an apocalyptic number.

390879434 is a deficient number, since it is larger than the sum of its proper divisors (298108726).

390879434 is a wasteful number, since it uses less digits than its factorization.

390879434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24986.

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 390879434 is about 19770.6710558848. The cubic root of 390879434 is about 731.1631136058.

The spelling of 390879434 in words is "three hundred ninety million, eight hundred seventy-nine thousand, four hundred thirty-four".