999392975 has 18 divisors (see below), whose sum is σ = 1441575144. Its totient is φ = 685297200.

The previous prime is 999392969. The next prime is 999393023. The reversal of 999392975 is 579293999.

999392975 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 999392975 - 2¹⁰ = 999391951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 406691 + ... + 409140.

It is an arithmetic number, because the mean of its divisors is an integer number (80087508).

Almost surely, 2^999392975 is an apocalyptic number.

999392975 is a deficient number, since it is larger than the sum of its proper divisors (442182169).

999392975 is a wasteful number, since it uses less digits than its factorization.

999392975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815855 (or 815843 counting only the distinct ones).

The product of its digits is 12400290, while the sum is 62.

The square root of 999392975 is about 31613.1772367157. The cubic root of 999392975 is about 999.7976173774.

The spelling of 999392975 in words is "nine hundred ninety-nine million, three hundred ninety-two thousand, nine hundred seventy-five".