855622944 has 216 divisors, whose sum is σ = 2741474736. Its totient is φ = 252806400.

The previous prime is 855622879. The next prime is 855622961. The reversal of 855622944 is 449226558.

855622944 is a `hidden beast` number, since 8 + 556 + 2 + 2 + 94 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 855622944.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1498179 + ... + 1498749.

Almost surely, 2^855622944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855622944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1370737368).

855622944 is an abundant number, since it is smaller than the sum of its proper divisors (1885851792).

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

855622944 is a wasteful number, since it uses less digits than its factorization.

855622944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652 (or 630 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 855622944 is about 29251.0332125209. The cubic root of 855622944 is about 949.3524466091.

The spelling of 855622944 in words is "eight hundred fifty-five million, six hundred twenty-two thousand, nine hundred forty-four".