899441920 has 144 divisors (see below), whose sum is σ = 2340559872. Its totient is φ = 329195520.

The previous prime is 899441911. The next prime is 899441957. The reversal of 899441920 is 29144998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3178099 + ... + 3178381.

It is an arithmetic number, because the mean of its divisors is an integer number (16253888).

Almost surely, 2^899441920 is an apocalyptic number.

899441920 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 899441920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1170279936).

899441920 is an abundant number, since it is smaller than the sum of its proper divisors (1441117952).

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

899441920 is a wasteful number, since it uses less digits than its factorization.

899441920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 899441920 is about 29990.6972243061. The cubic root of 899441920 is about 965.2897802626.

The spelling of 899441920 in words is "eight hundred ninety-nine million, four hundred forty-one thousand, nine hundred twenty".