869256836 has 24 divisors (see below), whose sum is σ = 1785502656. Its totient is φ = 362469600.

The previous prime is 869256827. The next prime is 869256841. The reversal of 869256836 is 638652968.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418490 + ... + 420561.

It is an arithmetic number, because the mean of its divisors is an integer number (74395944).

Almost surely, 2^869256836 is an apocalyptic number.

It is an amenable number.

869256836 is an abundant number, since it is smaller than the sum of its proper divisors (916245820).

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

869256836 is a wasteful number, since it uses less digits than its factorization.

869256836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839099 (or 839097 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 53.

The square root of 869256836 is about 29483.1619064170. The cubic root of 869256836 is about 954.3683719374.

The spelling of 869256836 in words is "eight hundred sixty-nine million, two hundred fifty-six thousand, eight hundred thirty-six".