899640368 has 40 divisors (see below), whose sum is σ = 1947906576. Its totient is φ = 398950400.

The previous prime is 899640341. The next prime is 899640389. The reversal of 899640368 is 863046998.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55121 + ... + 69552.

Almost surely, 2^899640368 is an apocalyptic number.

899640368 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

899640368 is an abundant number, since it is smaller than the sum of its proper divisors (1048266208).

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

899640368 is a wasteful number, since it uses less digits than its factorization.

899640368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124733 (or 124727 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 53.

The square root of 899640368 is about 29994.0055344397. The cubic root of 899640368 is about 965.3607671473.

The spelling of 899640368 in words is "eight hundred ninety-nine million, six hundred forty thousand, three hundred sixty-eight".