99385289 has 2 divisors, whose sum is σ = 99385290. Its totient is φ = 99385288.

The previous prime is 99385283. The next prime is 99385301. The reversal of 99385289 is 98258399.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64963600 + 34421689 = 8060^2 + 5867^2 .

It is an emirp because it is prime and its reverse (98258399) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99385289 is a prime.

It is a super-2 number, since 2×99385289² = 19754871339227042, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99385289.

It is not a weakly prime, because it can be changed into another prime (99385283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49692644 + 49692645.

It is an arithmetic number, because the mean of its divisors is an integer number (49692645).

Almost surely, 2^99385289 is an apocalyptic number.

It is an amenable number.

99385289 is a deficient number, since it is larger than the sum of its proper divisors (1).

99385289 is an equidigital number, since it uses as much as digits as its factorization.

99385289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 53.

The square root of 99385289 is about 9969.2170705628. The cubic root of 99385289 is about 463.2058493126.

The spelling of 99385289 in words is "ninety-nine million, three hundred eighty-five thousand, two hundred eighty-nine".