899109120 has 576 divisors, whose sum is σ = 3692150784. Its totient is φ = 181370880.

The previous prime is 899109067. The next prime is 899109121. The reversal of 899109120 is 21901998.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899109121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10832599 + ... + 10832681.

It is an arithmetic number, because the mean of its divisors is an integer number (6409984).

Almost surely, 2^899109120 is an apocalyptic number.

899109120 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 899109120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1846075392).

899109120 is an abundant number, since it is smaller than the sum of its proper divisors (2793041664).

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

899109120 is a wasteful number, since it uses less digits than its factorization.

899109120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 39.

The square root of 899109120 is about 29985.1483237952. The cubic root of 899109120 is about 965.1707108480.

The spelling of 899109120 in words is "eight hundred ninety-nine million, one hundred nine thousand, one hundred twenty".