9688039644449 has 2 divisors, whose sum is σ = 9688039644450. Its totient is φ = 9688039644448.

The previous prime is 9688039644421. The next prime is 9688039644461. The reversal of 9688039644449 is 9444469308869.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8370750900625 + 1317288743824 = 2893225^2 + 1147732^2 .

It is a cyclic number.

It is not a de Polignac number, because 9688039644449 - 2⁸ = 9688039644193 is a prime.

It is a super-3 number, since 3×9688039644449³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (9688039694449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4844019822224 + 4844019822225.

It is an arithmetic number, because the mean of its divisors is an integer number (4844019822225).

Almost surely, 2^{9688039644449} is an apocalyptic number.

It is an amenable number.

9688039644449 is a deficient number, since it is larger than the sum of its proper divisors (1).

9688039644449 is an equidigital number, since it uses as much as digits as its factorization.

9688039644449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1289945088, while the sum is 74.

The spelling of 9688039644449 in words is "nine trillion, six hundred eighty-eight billion, thirty-nine million, six hundred forty-four thousand, four hundred forty-nine".