899944 has 32 divisors (see below), whose sum is σ = 1811520. Its totient is φ = 418176.

The previous prime is 899939. The next prime is 899971. The reversal of 899944 is 449998.

It is a self number, because there is not a number n which added to its sum of digits gives 899944.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12292 + ... + 12364.

It is an arithmetic number, because the mean of its divisors is an integer number (56610).

2⁸⁹⁹⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

899944 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

899944 is a wasteful number, since it uses less digits than its factorization.

899944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 165 counting only the distinct ones).

The product of its digits is 93312, while the sum is 43.

The square root of 899944 is about 948.6537829999. The cubic root of 899944 is about 96.5469359225.

It can be divided in two parts, 89994 and 4, that multiplied together give a triangular number (359976 = T₈₄₈).

The spelling of 899944 in words is "eight hundred ninety-nine thousand, nine hundred forty-four".