9989689 has 2 divisors, whose sum is σ = 9989690. Its totient is φ = 9989688.

The previous prime is 9989677. The next prime is 9989699. The reversal of 9989689 is 9869899.

9989689 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., 5546025 + 4443664 = 2355^2 + 2108^2 .

It is a cyclic number.

It is not a de Polignac number, because 9989689 - 2²¹ = 7892537 is a prime.

It is not a weakly prime, because it can be changed into another prime (9989699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4994844 + 4994845.

It is an arithmetic number, because the mean of its divisors is an integer number (4994845).

Almost surely, 2^9989689 is an apocalyptic number.

It is an amenable number.

9989689 is a deficient number, since it is larger than the sum of its proper divisors (1).

9989689 is an equidigital number, since it uses as much as digits as its factorization.

9989689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2519424, while the sum is 58.

The square root of 9989689 is about 3160.6469274501. The cubic root of 9989689 is about 215.3693956180.

The spelling of 9989689 in words is "nine million, nine hundred eighty-nine thousand, six hundred eighty-nine".