899090400 has 144 divisors (see below), whose sum is σ = 3151767024. Its totient is φ = 221306880.

The previous prime is 899090369. The next prime is 899090419. The reversal of 899090400 is 4090998.

899090400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16792 + ... + 45608.

It is an arithmetic number, because the mean of its divisors is an integer number (21887271).

Almost surely, 2^899090400 is an apocalyptic number.

899090400 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 899090400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1575883512).

899090400 is an abundant number, since it is smaller than the sum of its proper divisors (2252676624).

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

899090400 is a wasteful number, since it uses less digits than its factorization.

899090400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28853 (or 28840 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 899090400 is about 29984.8361676365. The cubic root of 899090400 is about 965.1640123207.

The spelling of 899090400 in words is "eight hundred ninety-nine million, ninety thousand, four hundred".