899497920 has 112 divisors (see below), whose sum is σ = 2884493088. Its totient is φ = 237465600.

The previous prime is 899497919. The next prime is 899497933. The reversal of 899497920 is 29794998.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92322 + ... + 101598.

Almost surely, 2^899497920 is an apocalyptic number.

899497920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 899497920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1442246544).

899497920 is an abundant number, since it is smaller than the sum of its proper divisors (1984995168).

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

899497920 is a wasteful number, since it uses less digits than its factorization.

899497920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9398 (or 9388 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 57.

The square root of 899497920 is about 29991.6308326173. The cubic root of 899497920 is about 965.3098130943.

The spelling of 899497920 in words is "eight hundred ninety-nine million, four hundred ninety-seven thousand, nine hundred twenty".