9989540269 has 2 divisors, whose sum is σ = 9989540270. Its totient is φ = 9989540268.

The previous prime is 9989540207. The next prime is 9989540311. The reversal of 9989540269 is 9620459899.

It is a happy number.

9989540269 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., 9017971369 + 971568900 = 94963^2 + 31170^2 .

It is an emirp because it is prime and its reverse (9620459899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9989540269 - 2¹⁵ = 9989507501 is a prime.

It is a super-2 number, since 2×9989540269² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9989540569) 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, 4994770134 + 4994770135.

It is an arithmetic number, because the mean of its divisors is an integer number (4994770135).

Almost surely, 2^9989540269 is an apocalyptic number.

It is an amenable number.

9989540269 is a deficient number, since it is larger than the sum of its proper divisors (1).

9989540269 is an equidigital number, since it uses as much as digits as its factorization.

9989540269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12597120, while the sum is 61.

The square root of 9989540269 is about 99947.6876620965. The cubic root of 9989540269 is about 2153.6832677380.

The spelling of 9989540269 in words is "nine billion, nine hundred eighty-nine million, five hundred forty thousand, two hundred sixty-nine".