899861418 has 12 divisors (see below), whose sum is σ = 1949699778. Its totient is φ = 299953800.

The previous prime is 899861411. The next prime is 899861441. The reversal of 899861418 is 814168998.

899861418 is a `hidden beast` number, since 8 + 9 + 9 + 8 + 614 + 18 = 666.

It can be written as a sum of positive squares in only one way, i.e., 890843409 + 9018009 = 29847^2 + 3003^2 .

It is not an unprimeable number, because it can be changed into a prime (899861411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24996133 + ... + 24996168.

Almost surely, 2^899861418 is an apocalyptic number.

899861418 is an abundant number, since it is smaller than the sum of its proper divisors (1049838360).

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

899861418 is a wasteful number, since it uses less digits than its factorization.

899861418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49992309 (or 49992306 counting only the distinct ones).

The product of its digits is 995328, while the sum is 54.

The square root of 899861418 is about 29997.6902110813. The cubic root of 899861418 is about 965.4398267101.

The spelling of 899861418 in words is "eight hundred ninety-nine million, eight hundred sixty-one thousand, four hundred eighteen".