9889717 has 2 divisors, whose sum is σ = 9889718. Its totient is φ = 9889716.

The previous prime is 9889697. The next prime is 9889723. The reversal of 9889717 is 7179889.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9696996 + 192721 = 3114^2 + 439^2 .

It is an emirp because it is prime and its reverse (7179889) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9889717 - 2¹⁹ = 9365429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9889417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4944858 + 4944859.

It is an arithmetic number, because the mean of its divisors is an integer number (4944859).

Almost surely, 2^9889717 is an apocalyptic number.

It is an amenable number.

9889717 is a deficient number, since it is larger than the sum of its proper divisors (1).

9889717 is an equidigital number, since it uses as much as digits as its factorization.

9889717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 49.

The square root of 9889717 is about 3144.7920439991. The cubic root of 9889717 is about 214.6485478558.

The spelling of 9889717 in words is "nine million, eight hundred eighty-nine thousand, seven hundred seventeen".