856359111 has 4 divisors (see below), whose sum is σ = 1141812152. Its totient is φ = 570906072.

The previous prime is 856359109. The next prime is 856359149. The reversal of 856359111 is 111953658.

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

It is not a de Polignac number, because 856359111 - 2¹ = 856359109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 856359111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856359181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142726516 + ... + 142726521.

It is an arithmetic number, because the mean of its divisors is an integer number (285453038).

Almost surely, 2^856359111 is an apocalyptic number.

856359111 is a deficient number, since it is larger than the sum of its proper divisors (285453041).

856359111 is a wasteful number, since it uses less digits than its factorization.

856359111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285453040.

The product of its digits is 32400, while the sum is 39.

The square root of 856359111 is about 29263.6141137762. The cubic root of 856359111 is about 949.6246387809.

The spelling of 856359111 in words is "eight hundred fifty-six million, three hundred fifty-nine thousand, one hundred eleven".