899808 has 96 divisors (see below), whose sum is σ = 2935296. Its totient is φ = 235008.

The previous prime is 899807. The next prime is 899831. The reversal of 899808 is 808998.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 899808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8685 + ... + 8787.

It is an arithmetic number, because the mean of its divisors is an integer number (30576).

2⁸⁹⁹⁸⁰⁸ 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 899808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1467648).

899808 is an abundant number, since it is smaller than the sum of its proper divisors (2035488).

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

899808 is a wasteful number, since it uses less digits than its factorization.

899808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 899808 is about 948.5820997679. The cubic root of 899808 is about 96.5420722700.

The spelling of 899808 in words is "eight hundred ninety-nine thousand, eight hundred eight".