99989369 has 2 divisors, whose sum is σ = 99989370. Its totient is φ = 99989368.

The previous prime is 99989339. The next prime is 99989389. The reversal of 99989369 is 96398999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93799225 + 6190144 = 9685^2 + 2488^2 .

It is a cyclic number.

It is not a de Polignac number, because 99989369 - 2¹² = 99985273 is a prime.

It is a super-2 number, since 2×99989369² = 19995747826036322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (99989339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49994684 + 49994685.

It is an arithmetic number, because the mean of its divisors is an integer number (49994685).

Almost surely, 2^99989369 is an apocalyptic number.

It is an amenable number.

99989369 is a deficient number, since it is larger than the sum of its proper divisors (1).

99989369 is an equidigital number, since it uses as much as digits as its factorization.

99989369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8503056, while the sum is 62.

The square root of 99989369 is about 9999.4684358720. The cubic root of 99989369 is about 464.1424345347.

The spelling of 99989369 in words is "ninety-nine million, nine hundred eighty-nine thousand, three hundred sixty-nine".