9936638289 has 24 divisors (see below), whose sum is σ = 14828486400. Its totient is φ = 6405297120.

The previous prime is 9936638279. The next prime is 9936638333. The reversal of 9936638289 is 9828366399.

It is not a de Polignac number, because 9936638289 - 2²¹ = 9934541137 is a prime.

It is a super-3 number, since 3×9936638289³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (9936638209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 328402 + ... + 357380.

It is an arithmetic number, because the mean of its divisors is an integer number (617853600).

Almost surely, 2^9936638289 is an apocalyptic number.

It is an amenable number.

9936638289 is a deficient number, since it is larger than the sum of its proper divisors (4891848111).

9936638289 is a wasteful number, since it uses less digits than its factorization.

9936638289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30245 (or 30242 counting only the distinct ones).

The product of its digits is 30233088, while the sum is 63.

The square root of 9936638289 is about 99682.6880105066. The cubic root of 9936638289 is about 2149.8747566489.

The spelling of 9936638289 in words is "nine billion, nine hundred thirty-six million, six hundred thirty-eight thousand, two hundred eighty-nine".