899744 has 24 divisors (see below), whose sum is σ = 1830528. Its totient is φ = 434880.

The previous prime is 899719. The next prime is 899749. The reversal of 899744 is 447998.

899744 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (899749) by changing a digit.

899744 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539 + ... + 1445.

It is an arithmetic number, because the mean of its divisors is an integer number (76272).

2⁸⁹⁹⁷⁴⁴ 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 899744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (915264).

899744 is an abundant number, since it is smaller than the sum of its proper divisors (930784).

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

899744 is a wasteful number, since it uses less digits than its factorization.

899744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948 (or 940 counting only the distinct ones).

The product of its digits is 72576, while the sum is 41.

The square root of 899744 is about 948.5483646077. The cubic root of 899744 is about 96.5397833227.

The spelling of 899744 in words is "eight hundred ninety-nine thousand, seven hundred forty-four".