9989433169 has 2 divisors, whose sum is σ = 9989433170. Its totient is φ = 9989433168.

The previous prime is 9989433143. The next prime is 9989433229. The reversal of 9989433169 is 9613349899.

9989433169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7734323025 + 2255110144 = 87945^2 + 47488^2 .

It is a cyclic number.

It is not a de Polignac number, because 9989433169 - 2⁵ = 9989433137 is a prime.

It is a super-2 number, since 2×9989433169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9989433469) 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, 4994716584 + 4994716585.

It is an arithmetic number, because the mean of its divisors is an integer number (4994716585).

Almost surely, 2^9989433169 is an apocalyptic number.

It is an amenable number.

9989433169 is a deficient number, since it is larger than the sum of its proper divisors (1).

9989433169 is an equidigital number, since it uses as much as digits as its factorization.

9989433169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11337408, while the sum is 61.

The square root of 9989433169 is about 99947.1518803813. The cubic root of 9989433169 is about 2153.6755710106.

The spelling of 9989433169 in words is "nine billion, nine hundred eighty-nine million, four hundred thirty-three thousand, one hundred sixty-nine".