856054998 has 24 divisors (see below), whose sum is σ = 1872124488. Its totient is φ = 282684192.

The previous prime is 856054967. The next prime is 856054999. The reversal of 856054998 is 899450658.

It is a happy number.

856054998 is a `hidden beast` number, since 8 + 5 + 6 + 0 + 549 + 98 = 666.

856054998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856054999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220311 + ... + 224162.

It is an arithmetic number, because the mean of its divisors is an integer number (78005187).

Almost surely, 2^856054998 is an apocalyptic number.

856054998 is an abundant number, since it is smaller than the sum of its proper divisors (1016069490).

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

856054998 is a wasteful number, since it uses less digits than its factorization.

856054998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444588 (or 444585 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The square root of 856054998 is about 29258.4175580293. The cubic root of 856054998 is about 949.5122142203.

The spelling of 856054998 in words is "eight hundred fifty-six million, fifty-four thousand, nine hundred ninety-eight".