9936179969 has 2 divisors, whose sum is σ = 9936179970. Its totient is φ = 9936179968.

The previous prime is 9936179959. The next prime is 9936179971. The reversal of 9936179969 is 9699716399.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9513466369 + 422713600 = 97537^2 + 20560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9936179969 is a prime.

It is a super-2 number, since 2×9936179969² (a number of 21 digits) contains 22 as substring.

Together with 9936179971, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 9936179899 and 9936179908.

It is not a weakly prime, because it can be changed into another prime (9936179909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4968089984 + 4968089985.

It is an arithmetic number, because the mean of its divisors is an integer number (4968089985).

Almost surely, 2^9936179969 is an apocalyptic number.

It is an amenable number.

9936179969 is a deficient number, since it is larger than the sum of its proper divisors (1).

9936179969 is an equidigital number, since it uses as much as digits as its factorization.

9936179969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44641044, while the sum is 68.

The square root of 9936179969 is about 99680.3890893289. The cubic root of 9936179969 is about 2149.8417023529.

The spelling of 9936179969 in words is "nine billion, nine hundred thirty-six million, one hundred seventy-nine thousand, nine hundred sixty-nine".