879569 has 4 divisors (see below), whose sum is σ = 881460. Its totient is φ = 877680.

The previous prime is 879553. The next prime is 879581. The reversal of 879569 is 965978.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 543169 + 336400 = 737^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 879569 - 2⁴ = 879553 is a prime.

It is a super-2 number, since 2×879569² = 1547283251522, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (136080) is a multiple of the sum of its prime divisors (1890).

It is not an unprimeable number, because it can be changed into a prime (879539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299 + ... + 1359.

It is an arithmetic number, because the mean of its divisors is an integer number (220365).

2⁸⁷⁹⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

879569 is a deficient number, since it is larger than the sum of its proper divisors (1891).

879569 is a wasteful number, since it uses less digits than its factorization.

879569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890.

The product of its digits is 136080, while the sum is 44.

The square root of 879569 is about 937.8534000578. The cubic root of 879569 is about 95.8127498746.

The spelling of 879569 in words is "eight hundred seventy-nine thousand, five hundred sixty-nine".