899644432 has 10 divisors (see below), whose sum is σ = 1743061118. Its totient is φ = 449822208.

The previous prime is 899644423. The next prime is 899644469. The reversal of 899644432 is 234446998.

It can be written as a sum of positive squares in only one way, i.e., 883516176 + 16128256 = 29724^2 + 4016^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28113873 + ... + 28113904.

Almost surely, 2^899644432 is an apocalyptic number.

It is an amenable number.

899644432 is a deficient number, since it is larger than the sum of its proper divisors (843416686).

899644432 is a wasteful number, since it uses less digits than its factorization.

899644432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56227785 (or 56227779 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 49.

The square root of 899644432 is about 29994.0732812334. The cubic root of 899644432 is about 965.3622207727.

The spelling of 899644432 in words is "eight hundred ninety-nine million, six hundred forty-four thousand, four hundred thirty-two".