856522923 has 16 divisors (see below), whose sum is σ = 1173699072. Its totient is φ = 555272000.

The previous prime is 856522897. The next prime is 856522949. The reversal of 856522923 is 329225658.

It is an interprime number because it is at equal distance from previous prime (856522897) and next prime (856522949).

It is a cyclic number.

It is not a de Polignac number, because 856522923 - 2¹⁰ = 856521899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (856522973) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 27058 + ... + 49448.

It is an arithmetic number, because the mean of its divisors is an integer number (73356192).

Almost surely, 2^856522923 is an apocalyptic number.

856522923 is a deficient number, since it is larger than the sum of its proper divisors (317176149).

856522923 is a wasteful number, since it uses less digits than its factorization.

856522923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22746.

The product of its digits is 259200, while the sum is 42.

The square root of 856522923 is about 29266.4128823469. The cubic root of 856522923 is about 949.6851858074.

The spelling of 856522923 in words is "eight hundred fifty-six million, five hundred twenty-two thousand, nine hundred twenty-three".