856932811 has 16 divisors (see below), whose sum is σ = 1003014144. Its totient is φ = 716855904.

The previous prime is 856932799. The next prime is 856932871. The reversal of 856932811 is 118239658.

856932811 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 856932811 - 2²⁹ = 320061899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (856932871) 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, 119226 + ... + 126208.

It is an arithmetic number, because the mean of its divisors is an integer number (62688384).

Almost surely, 2^856932811 is an apocalyptic number.

856932811 is a deficient number, since it is larger than the sum of its proper divisors (146081333).

856932811 is a wasteful number, since it uses less digits than its factorization.

856932811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7410.

The product of its digits is 103680, while the sum is 43.

The square root of 856932811 is about 29273.4147478561. The cubic root of 856932811 is about 949.8366518777.

The spelling of 856932811 in words is "eight hundred fifty-six million, nine hundred thirty-two thousand, eight hundred eleven".