869826 has 16 divisors (see below), whose sum is σ = 1800000. Its totient is φ = 279888.

The previous prime is 869819. The next prime is 869849. The reversal of 869826 is 628968.

It is a Curzon number.

It is an unprimeable number.

869826 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2326 + ... + 2673.

It is an arithmetic number, because the mean of its divisors is an integer number (112500).

2⁸⁶⁹⁸²⁶ is an apocalyptic number.

869826 is an abundant number, since it is smaller than the sum of its proper divisors (930174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

869826 is a wasteful number, since it uses less digits than its factorization.

869826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5033.

The product of its digits is 41472, while the sum is 39.

The square root of 869826 is about 932.6446268542. The cubic root of 869826 is about 95.4576624008.

The spelling of 869826 in words is "eight hundred sixty-nine thousand, eight hundred twenty-six".