899518464 has 156 divisors (see below), whose sum is σ = 2799651036. Its totient is φ = 276627456.

The previous prime is 899518457. The next prime is 899518481. The reversal of 899518464 is 464815998.

899518464 is a `hidden beast` number, since 89 + 9 + 518 + 46 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 332697600 + 566820864 = 18240^2 + 23808^2 .

It is a tau number, because it is divible by the number of its divisors (156).

Its product of digits (2488320) is a multiple of the sum of its prime factors (1920).

It is a self number, because there is not a number n which added to its sum of digits gives 899518464.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 478294 + ... + 480170.

It is an arithmetic number, because the mean of its divisors is an integer number (17946481).

Almost surely, 2^899518464 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 899518464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1399825518).

899518464 is an abundant number, since it is smaller than the sum of its proper divisors (1900132572).

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

899518464 is a wasteful number, since it uses less digits than its factorization.

899518464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920 (or 1895 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 899518464 is about 29991.9733262085. The cubic root of 899518464 is about 965.3171620732.

The spelling of 899518464 in words is "eight hundred ninety-nine million, five hundred eighteen thousand, four hundred sixty-four".