899244 has 18 divisors (see below), whose sum is σ = 2273180. Its totient is φ = 299736.

The previous prime is 899237. The next prime is 899263. The reversal of 899244 is 442998.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 24979 = 899244 / (8 + 9 + 9 + 2 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 899199 and 899208.

It is an unprimeable number.

899244 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 5 ways as a sum of consecutive naturals, for example, 12454 + ... + 12525.

2⁸⁹⁹²⁴⁴ is an apocalyptic number.

It is an amenable number.

899244 is an abundant number, since it is smaller than the sum of its proper divisors (1373936).

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

899244 is a wasteful number, since it uses less digits than its factorization.

899244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24989 (or 24984 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 899244 is about 948.2847673563. The cubic root of 899244 is about 96.5218971848.

The spelling of 899244 in words is "eight hundred ninety-nine thousand, two hundred forty-four".