8499855856 has 20 divisors (see below), whose sum is σ = 16470144504. Its totient is φ = 4249496000.

The previous prime is 8499855803. The next prime is 8499855863. The reversal of 8499855856 is 6585589948.

Its product of digits (124416000) is a multiple of the sum of its prime factors (54000).

It is a junction number, because it is equal to n+sod(n) for n = 8499855791 and 8499855800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186531 + ... + 227581.

Almost surely, 2^8499855856 is an apocalyptic number.

It is an amenable number.

8499855856 is a deficient number, since it is larger than the sum of its proper divisors (7970288648).

8499855856 is a wasteful number, since it uses less digits than its factorization.

8499855856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54000 (or 53994 counting only the distinct ones).

The product of its digits is 124416000, while the sum is 67.

The square root of 8499855856 is about 92194.6628390169. The cubic root of 8499855856 is about 2040.8160146956.

The spelling of 8499855856 in words is "eight billion, four hundred ninety-nine million, eight hundred fifty-five thousand, eight hundred fifty-six".