899153920 has 160 divisors (see below), whose sum is σ = 2516580000. Its totient is φ = 308281344.

The previous prime is 899153873. The next prime is 899153939. The reversal of 899153920 is 29351998.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128450557 + ... + 128450563.

It is an arithmetic number, because the mean of its divisors is an integer number (15728625).

Almost surely, 2^899153920 is an apocalyptic number.

899153920 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 899153920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1258290000).

899153920 is an abundant number, since it is smaller than the sum of its proper divisors (1617426080).

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

899153920 is an frugal number, since it uses more digits than its factorization.

899153920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64 (or 14 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 46.

The square root of 899153920 is about 29985.8953509813. The cubic root of 899153920 is about 965.1867411343.

The spelling of 899153920 in words is "eight hundred ninety-nine million, one hundred fifty-three thousand, nine hundred twenty".