856028984 has 16 divisors (see below), whose sum is σ = 1629011400. Its totient is φ = 421625952.

The previous prime is 856028981. The next prime is 856029007. The reversal of 856028984 is 489820658.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856028981) 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, 797999 + ... + 799070.

Almost surely, 2^856028984 is an apocalyptic number.

It is an amenable number.

856028984 is a deficient number, since it is larger than the sum of its proper divisors (772982416).

856028984 is a wasteful number, since it uses less digits than its factorization.

856028984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597142 (or 1597138 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 50.

The square root of 856028984 is about 29257.9729988255. The cubic root of 856028984 is about 949.5025961229.

The spelling of 856028984 in words is "eight hundred fifty-six million, twenty-eight thousand, nine hundred eighty-four".