899861166 has 24 divisors (see below), whose sum is σ = 2052315720. Its totient is φ = 284166576.

The previous prime is 899861161. The next prime is 899861173. The reversal of 899861166 is 661168998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899861161) 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, 1315245 + ... + 1315928.

It is an arithmetic number, because the mean of its divisors is an integer number (85513155).

Almost surely, 2^899861166 is an apocalyptic number.

899861166 is an abundant number, since it is smaller than the sum of its proper divisors (1152454554).

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

899861166 is a wasteful number, since it uses less digits than its factorization.

899861166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631200 (or 2631197 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 899861166 is about 29997.6860107576. The cubic root of 899861166 is about 965.4397365885.

The spelling of 899861166 in words is "eight hundred ninety-nine million, eight hundred sixty-one thousand, one hundred sixty-six".