856243095 has 16 divisors (see below), whose sum is σ = 1414182912. Its totient is φ = 441931680.

The previous prime is 856243043. The next prime is 856243109. The reversal of 856243095 is 590342658.

It is not a de Polignac number, because 856243095 - 2¹⁰ = 856242071 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 920227 + ... + 921156.

It is an arithmetic number, because the mean of its divisors is an integer number (88386432).

Almost surely, 2^856243095 is an apocalyptic number.

856243095 is a deficient number, since it is larger than the sum of its proper divisors (557939817).

856243095 is a wasteful number, since it uses less digits than its factorization.

856243095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841422.

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

The square root of 856243095 is about 29261.6317897687. The cubic root of 856243095 is about 949.5817531011.

It can be divided in two parts, 856 and 243095, that added together give a triangular number (243951 = T₆₉₈).

The spelling of 856243095 in words is "eight hundred fifty-six million, two hundred forty-three thousand, ninety-five".