999000844 has 6 divisors (see below), whose sum is σ = 1748251484. Its totient is φ = 499500420.

The previous prime is 999000841. The next prime is 999000901. The reversal of 999000844 is 448000999.

999000844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 999000844.

It is not an unprimeable number, because it can be changed into a prime (999000841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124875102 + ... + 124875109.

Almost surely, 2^999000844 is an apocalyptic number.

It is an amenable number.

999000844 is a deficient number, since it is larger than the sum of its proper divisors (749250640).

999000844 is a wasteful number, since it uses less digits than its factorization.

999000844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249750215 (or 249750213 counting only the distinct ones).

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

The square root of 999000844 is about 31606.9746100445. The cubic root of 999000844 is about 999.6668370148. Note that the first 3 decimals are identical.

The spelling of 999000844 in words is "nine hundred ninety-nine million, eight hundred forty-four", and thus it is an aban number.