879557 has 4 divisors (see below), whose sum is σ = 1005216. Its totient is φ = 753900.

The previous prime is 879553. The next prime is 879581. The reversal of 879557 is 755978.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 879557 - 2² = 879553 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 879557.

It is not an unprimeable number, because it can be changed into a prime (879553) 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, 62819 + ... + 62832.

It is an arithmetic number, because the mean of its divisors is an integer number (251304).

2⁸⁷⁹⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

879557 is a deficient number, since it is larger than the sum of its proper divisors (125659).

879557 is a wasteful number, since it uses less digits than its factorization.

879557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125658.

The product of its digits is 88200, while the sum is 41.

The square root of 879557 is about 937.8470024476. The cubic root of 879557 is about 95.8123141467.

The spelling of 879557 in words is "eight hundred seventy-nine thousand, five hundred fifty-seven".