879405 has 16 divisors (see below), whose sum is σ = 1468800. Its totient is φ = 448448.

The previous prime is 879401. The next prime is 879413. The reversal of 879405 is 504978.

It is a cyclic number.

It is not a de Polignac number, because 879405 - 2² = 879401 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879401) 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, 930 + ... + 1619.

It is an arithmetic number, because the mean of its divisors is an integer number (91800).

2⁸⁷⁹⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

879405 is a deficient number, since it is larger than the sum of its proper divisors (589395).

879405 is a wasteful number, since it uses less digits than its factorization.

879405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 879405 is about 937.7659622742. The cubic root of 879405 is about 95.8067945838.

The spelling of 879405 in words is "eight hundred seventy-nine thousand, four hundred five".