856308916 has 24 divisors (see below), whose sum is σ = 1531553184. Its totient is φ = 418772640.

The previous prime is 856308889. The next prime is 856308917. The reversal of 856308916 is 619803658.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856308917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64071 + ... + 76273.

It is an arithmetic number, because the mean of its divisors is an integer number (63814716).

Almost surely, 2^856308916 is an apocalyptic number.

It is an amenable number.

856308916 is a deficient number, since it is larger than the sum of its proper divisors (675244268).

856308916 is a wasteful number, since it uses less digits than its factorization.

856308916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12591 (or 12589 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 856308916 is about 29262.7564661978. The cubic root of 856308916 is about 949.6060845165.

The spelling of 856308916 in words is "eight hundred fifty-six million, three hundred eight thousand, nine hundred sixteen".