390879 has 16 divisors (see below), whose sum is σ = 599040. Its totient is φ = 251640.

The previous prime is 390877. The next prime is 390883. The reversal of 390879 is 978093.

390879 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 390879 - 2¹ = 390877 is a prime.

It is an Ulam number.

390879 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390877) 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, 604 + ... + 1070.

It is an arithmetic number, because the mean of its divisors is an integer number (37440).

2³⁹⁰⁸⁷⁹ is an apocalyptic number.

390879 is a deficient number, since it is larger than the sum of its proper divisors (208161).

390879 is a wasteful number, since it uses less digits than its factorization.

390879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 390879 is about 625.2031669785. The cubic root of 390879 is about 73.1162842998.

The spelling of 390879 in words is "three hundred ninety thousand, eight hundred seventy-nine".