9729975 has 12 divisors (see below), whose sum is σ = 16087016. Its totient is φ = 5189280.

The previous prime is 9729961. The next prime is 9729983. The reversal of 9729975 is 5799279.

It is not a de Polignac number, because 9729975 - 2¹² = 9725879 is a prime.

It is a Duffinian number.

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, 64792 + ... + 64941.

Almost surely, 2^9729975 is an apocalyptic number.

9729975 is a deficient number, since it is larger than the sum of its proper divisors (6357041).

9729975 is a wasteful number, since it uses less digits than its factorization.

9729975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129746 (or 129741 counting only the distinct ones).

The product of its digits is 357210, while the sum is 48.

The square root of 9729975 is about 3119.2907847778. The cubic root of 9729975 is about 213.4865774478.

The spelling of 9729975 in words is "nine million, seven hundred twenty-nine thousand, nine hundred seventy-five".