899388 has 72 divisors (see below), whose sum is σ = 2690688. Its totient is φ = 247968.

The previous prime is 899387. The next prime is 899401. The reversal of 899388 is 883998.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 899388.

It is not an unprimeable number, because it can be changed into a prime (899387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10795 + ... + 10877.

2⁸⁹⁹³⁸⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 899388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1345344).

899388 is an abundant number, since it is smaller than the sum of its proper divisors (1791300).

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

899388 is a wasteful number, since it uses less digits than its factorization.

899388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 138 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 899388 is about 948.3606908766. The cubic root of 899388 is about 96.5270490722.

The spelling of 899388 in words is "eight hundred ninety-nine thousand, three hundred eighty-eight".