856976911 has 16 divisors (see below), whose sum is σ = 994263040. Its totient is φ = 723453120.

The previous prime is 856976903. The next prime is 856976951. The reversal of 856976911 is 119679658.

856976911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 856976911 - 2³ = 856976903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856976951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251026 + ... + 254416.

It is an arithmetic number, because the mean of its divisors is an integer number (62141440).

Almost surely, 2^856976911 is an apocalyptic number.

856976911 is a deficient number, since it is larger than the sum of its proper divisors (137286129).

856976911 is a wasteful number, since it uses less digits than its factorization.

856976911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934.

The product of its digits is 816480, while the sum is 52.

The square root of 856976911 is about 29274.1679813449. The cubic root of 856976911 is about 949.8529452896.

The spelling of 856976911 in words is "eight hundred fifty-six million, nine hundred seventy-six thousand, nine hundred eleven".