856359113 has 4 divisors (see below), whose sum is σ = 860034708. Its totient is φ = 852683520.

The previous prime is 856359109. The next prime is 856359149. The reversal of 856359113 is 311953658.

856359113 = 20692² + 20693².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 428200249 + 428158864 = 20693^2 + 20692^2 .

It is a cyclic number.

It is not a de Polignac number, because 856359113 - 2² = 856359109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (856359193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1837448 + ... + 1837913.

It is an arithmetic number, because the mean of its divisors is an integer number (215008677).

Almost surely, 2^856359113 is an apocalyptic number.

856359113 is the 20693-rd centered square number.

It is an amenable number.

856359113 is a deficient number, since it is larger than the sum of its proper divisors (3675595).

856359113 is a wasteful number, since it uses less digits than its factorization.

856359113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3675594.

The product of its digits is 97200, while the sum is 41.

The square root of 856359113 is about 29263.6141479483. The cubic root of 856359113 is about 949.6246395201.

It can be divided in two parts, 8563 and 59113, that added together give a palindrome (67676).

The spelling of 856359113 in words is "eight hundred fifty-six million, three hundred fifty-nine thousand, one hundred thirteen".