9975798009 has 12 divisors (see below), whose sum is σ = 14513153200. Its totient is φ = 6602685624.

The previous prime is 9975797989. The next prime is 9975798011. The reversal of 9975798009 is 9008975799.

9975798009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9975798009 - 2⁹ = 9975797497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9975798059) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3985879 + ... + 3988380.

Almost surely, 2^9975798009 is an apocalyptic number.

It is an amenable number.

9975798009 is a deficient number, since it is larger than the sum of its proper divisors (4537355191).

9975798009 is a wasteful number, since it uses less digits than its factorization.

9975798009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7974404 (or 7974401 counting only the distinct ones).

The product of its (nonzero) digits is 12859560, while the sum is 63.

The square root of 9975798009 is about 99878.9167392198. The cubic root of 9975798009 is about 2152.6952323657.

The spelling of 9975798009 in words is "nine billion, nine hundred seventy-five million, seven hundred ninety-eight thousand, nine".