856049900 has 18 divisors (see below), whose sum is σ = 1857628500. Its totient is φ = 342419920.

The previous prime is 856049867. The next prime is 856049917. The reversal of 856049900 is 9940658.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 4280150 + ... + 4280349.

Almost surely, 2^856049900 is an apocalyptic number.

It is an amenable number.

856049900 is an abundant number, since it is smaller than the sum of its proper divisors (1001578600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

856049900 is a wasteful number, since it uses less digits than its factorization.

856049900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8560513 (or 8560506 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 856049900 is about 29258.3304376719. The cubic root of 856049900 is about 949.5103293636.

The spelling of 856049900 in words is "eight hundred fifty-six million, forty-nine thousand, nine hundred".