879986 has 8 divisors (see below), whose sum is σ = 1341804. Its totient is φ = 432720.

The previous prime is 879979. The next prime is 880001. The reversal of 879986 is 689978.

It can be written as a sum of positive squares in 2 ways, for example, as 866761 + 13225 = 931^2 + 115^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 879986.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3485 + ... + 3728.

2⁸⁷⁹⁹⁸⁶ is an apocalyptic number.

879986 is a deficient number, since it is larger than the sum of its proper divisors (461818).

879986 is a wasteful number, since it uses less digits than its factorization.

879986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7276.

The product of its digits is 217728, while the sum is 47.

The square root of 879986 is about 938.0756899099. The cubic root of 879986 is about 95.8278889577.

The spelling of 879986 in words is "eight hundred seventy-nine thousand, nine hundred eighty-six".