9929975 has 12 divisors (see below), whose sum is σ = 13432920. Its totient is φ = 7221600.

The previous prime is 9929939. The next prime is 9929981. The reversal of 9929975 is 5799299.

It is not a de Polignac number, because 9929975 - 2⁸ = 9929719 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, 17780 + ... + 18329.

It is an arithmetic number, because the mean of its divisors is an integer number (1119410).

Almost surely, 2^9929975 is an apocalyptic number.

9929975 is a deficient number, since it is larger than the sum of its proper divisors (3502945).

9929975 is a wasteful number, since it uses less digits than its factorization.

9929975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36130 (or 36125 counting only the distinct ones).

The product of its digits is 459270, while the sum is 50.

The square root of 9929975 is about 3151.1862845601. The cubic root of 9929975 is about 214.9394096434.

The spelling of 9929975 in words is "nine million, nine hundred twenty-nine thousand, nine hundred seventy-five".