854638900 has 18 divisors (see below), whose sum is σ = 1854566630. Its totient is φ = 341855520.

The previous prime is 854638847. The next prime is 854638919. The reversal of 854638900 is 9836458.

It can be written as a sum of positive squares in 3 ways, for example, as 149523984 + 705114916 = 12228^2 + 26554^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4273095 + ... + 4273294.

Almost surely, 2^854638900 is an apocalyptic number.

It is an amenable number.

854638900 is an abundant number, since it is smaller than the sum of its proper divisors (999927730).

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

854638900 is a wasteful number, since it uses less digits than its factorization.

854638900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8546403 (or 8546396 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 854638900 is about 29234.2077026213. The cubic root of 854638900 is about 948.9883598524.

The spelling of 854638900 in words is "eight hundred fifty-four million, six hundred thirty-eight thousand, nine hundred".