9716989717 has 2 divisors, whose sum is σ = 9716989718. Its totient is φ = 9716989716.

The previous prime is 9716989703. The next prime is 9716989769. The reversal of 9716989717 is 7179896179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5911456996 + 3805532721 = 76886^2 + 61689^2 .

It is a cyclic number.

It is not a de Polignac number, because 9716989717 - 2³¹ = 7569506069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9716989787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4858494858 + 4858494859.

It is an arithmetic number, because the mean of its divisors is an integer number (4858494859).

Almost surely, 2^9716989717 is an apocalyptic number.

It is an amenable number.

9716989717 is a deficient number, since it is larger than the sum of its proper divisors (1).

9716989717 is an equidigital number, since it uses as much as digits as its factorization.

9716989717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12002256, while the sum is 64.

The square root of 9716989717 is about 98574.7925029518. The cubic root of 9716989717 is about 2133.9156460483.

The spelling of 9716989717 in words is "nine billion, seven hundred sixteen million, nine hundred eighty-nine thousand, seven hundred seventeen".