9993881717 has 2 divisors, whose sum is σ = 9993881718. Its totient is φ = 9993881716.

The previous prime is 9993881683. The next prime is 9993881741. The reversal of 9993881717 is 7171883999.

9993881717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9925339876 + 68541841 = 99626^2 + 8279^2 .

It is a cyclic number.

It is not a de Polignac number, because 9993881717 - 2⁸ = 9993881461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9993881717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9993481717) 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 as a sum of consecutive naturals, namely, 4996940858 + 4996940859.

It is an arithmetic number, because the mean of its divisors is an integer number (4996940859).

Almost surely, 2^9993881717 is an apocalyptic number.

It is an amenable number.

9993881717 is a deficient number, since it is larger than the sum of its proper divisors (1).

9993881717 is an equidigital number, since it uses as much as digits as its factorization.

9993881717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6858432, while the sum is 62.

The square root of 9993881717 is about 99969.4039043947. The cubic root of 9993881717 is about 2153.9952190215.

The spelling of 9993881717 in words is "nine billion, nine hundred ninety-three million, eight hundred eighty-one thousand, seven hundred seventeen".