9983658997 has 16 divisors (see below), whose sum is σ = 10883017600. Its totient is φ = 9103752000.

The previous prime is 9983658991. The next prime is 9983659033. The reversal of 9983658997 is 7998563899.

9983658997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9983658997 - 2³ = 9983658989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9983658991) 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 15 ways as a sum of consecutive naturals, for example, 341254 + ... + 369352.

It is an arithmetic number, because the mean of its divisors is an integer number (680188600).

Almost surely, 2^9983658997 is an apocalyptic number.

It is an amenable number.

9983658997 is a deficient number, since it is larger than the sum of its proper divisors (899358603).

9983658997 is a wasteful number, since it uses less digits than its factorization.

9983658997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28444.

The product of its digits is 264539520, while the sum is 73.

The square root of 9983658997 is about 99918.2615791528. The cubic root of 9983658997 is about 2153.2605294430.

The spelling of 9983658997 in words is "nine billion, nine hundred eighty-three million, six hundred fifty-eight thousand, nine hundred ninety-seven".