869811904 has 84 divisors (see below), whose sum is σ = 1885867704. Its totient is φ = 397842432.

The previous prime is 869811809. The next prime is 869811911. The reversal of 869811904 is 409118968.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1481499 + ... + 1482085.

It is an arithmetic number, because the mean of its divisors is an integer number (22450806).

Almost surely, 2^869811904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 869811904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (942933852).

869811904 is an abundant number, since it is smaller than the sum of its proper divisors (1016055800).

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

869811904 is a wasteful number, since it uses less digits than its factorization.

869811904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762 (or 739 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 869811904 is about 29492.5737093255. The cubic root of 869811904 is about 954.5714675036.

It can be divided in two parts, 8698 and 11904, that added together give a palindrome (20602).

The spelling of 869811904 in words is "eight hundred sixty-nine million, eight hundred eleven thousand, nine hundred four".