855090972 has 96 divisors (see below), whose sum is σ = 2352134400. Its totient is φ = 267883200.

The previous prime is 855090961. The next prime is 855090997. The reversal of 855090972 is 279090558.

It is a happy number.

855090972 is a `hidden beast` number, since 8 + 550 + 9 + 0 + 97 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 267222 + ... + 270402.

It is an arithmetic number, because the mean of its divisors is an integer number (24501400).

Almost surely, 2^855090972 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 855090972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1176067200).

855090972 is an abundant number, since it is smaller than the sum of its proper divisors (1497043428).

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

855090972 is a wasteful number, since it uses less digits than its factorization.

855090972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3344 (or 3336 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 855090972 is about 29241.9385814279. The cubic root of 855090972 is about 949.1556568026.

The spelling of 855090972 in words is "eight hundred fifty-five million, ninety thousand, nine hundred seventy-two".