999000872 has 8 divisors (see below), whose sum is σ = 1873126650. Its totient is φ = 499500432.

The previous prime is 999000841. The next prime is 999000901. The reversal of 999000872 is 278000999.

999000872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 882921796 + 116079076 = 29714^2 + 10774^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62437547 + ... + 62437562.

Almost surely, 2^999000872 is an apocalyptic number.

It is an amenable number.

999000872 is a deficient number, since it is larger than the sum of its proper divisors (874125778).

999000872 is a wasteful number, since it uses less digits than its factorization.

999000872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124875115 (or 124875111 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 999000872 is about 31606.9750529847. The cubic root of 999000872 is about 999.6668463543. Note that the first 3 decimals are identical.

The spelling of 999000872 in words is "nine hundred ninety-nine million, eight hundred seventy-two", and thus it is an aban number.