999790975 has 12 divisors (see below), whose sum is σ = 1244161440. Its totient is φ = 796980800.

The previous prime is 999790969. The next prime is 999790997. The reversal of 999790975 is 579097999.

It is not a de Polignac number, because 999790975 - 2⁵ = 999790943 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64135 + ... + 78184.

It is an arithmetic number, because the mean of its divisors is an integer number (103680120).

Almost surely, 2^999790975 is an apocalyptic number.

999790975 is a deficient number, since it is larger than the sum of its proper divisors (244370465).

999790975 is a wasteful number, since it uses less digits than its factorization.

999790975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142610 (or 142605 counting only the distinct ones).

The product of its (nonzero) digits is 14467005, while the sum is 64.

The square root of 999790975 is about 31619.4714535205. The cubic root of 999790975 is about 999.9303201448.

The spelling of 999790975 in words is "nine hundred ninety-nine million, seven hundred ninety thousand, nine hundred seventy-five".