879439 has 8 divisors (see below), whose sum is σ = 990720. Its totient is φ = 773400.

The previous prime is 879413. The next prime is 879449. The reversal of 879439 is 934978.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-879439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 949 + ... + 1630.

It is an arithmetic number, because the mean of its divisors is an integer number (123840).

2⁸⁷⁹⁴³⁹ is an apocalyptic number.

879439 is a deficient number, since it is larger than the sum of its proper divisors (111281).

879439 is a wasteful number, since it uses less digits than its factorization.

879439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2621.

The product of its digits is 54432, while the sum is 40.

The square root of 879439 is about 937.7840902894. The cubic root of 879439 is about 95.8080292781.

It can be divided in two parts, 879 and 439, that multiplied together give a triangular number (385881 = T₈₇₈).

The spelling of 879439 in words is "eight hundred seventy-nine thousand, four hundred thirty-nine".