999000975 has 144 divisors (see below), whose sum is σ = 2051868672. Its totient is φ = 426666240.

The previous prime is 999000967. The next prime is 999000991. The reversal of 999000975 is 579000999.

It is not a de Polignac number, because 999000975 - 2³ = 999000967 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4479714 + ... + 4479936.

It is an arithmetic number, because the mean of its divisors is an integer number (14249088).

Almost surely, 2^999000975 is an apocalyptic number.

999000975 is an abundant number, since it is smaller than the sum of its proper divisors (1052867697).

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

999000975 is a wasteful number, since it uses less digits than its factorization.

999000975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 229635, while the sum is 48.

The square root of 999000975 is about 31606.9766823719. The cubic root of 999000975 is about 999.6668807105. Note that the first 3 decimals are identical.

The spelling of 999000975 in words is "nine hundred ninety-nine million, nine hundred seventy-five", and thus it is an aban number.