879904 has 24 divisors (see below), whose sum is σ = 1790208. Its totient is φ = 425280.

The previous prime is 879881. The next prime is 879917. The reversal of 879904 is 409978.

It is a happy number.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549 + ... + 1435.

It is an arithmetic number, because the mean of its divisors is an integer number (74592).

2⁸⁷⁹⁹⁰⁴ 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 879904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (895104).

879904 is an abundant number, since it is smaller than the sum of its proper divisors (910304).

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

879904 is a wasteful number, since it uses less digits than its factorization.

879904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 879904 is about 938.0319823972. The cubic root of 879904 is about 95.8249123455.

The spelling of 879904 in words is "eight hundred seventy-nine thousand, nine hundred four".