879804 has 18 divisors (see below), whose sum is σ = 2224040. Its totient is φ = 293256.

The previous prime is 879799. The next prime is 879817. The reversal of 879804 is 408978.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 24439 = 879804 / (8 + 7 + 9 + 8 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12184 + ... + 12255.

2⁸⁷⁹⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

879804 is an abundant number, since it is smaller than the sum of its proper divisors (1344236).

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

879804 is a wasteful number, since it uses less digits than its factorization.

879804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24449 (or 24444 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 879804 is about 937.9786777960. The cubic root of 879804 is about 95.8212820805.

The spelling of 879804 in words is "eight hundred seventy-nine thousand, eight hundred four".