99385889 has 2 divisors, whose sum is σ = 99385890. Its totient is φ = 99385888.

The previous prime is 99385883. The next prime is 99385933. The reversal of 99385889 is 98858399.

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., 85248289 + 14137600 = 9233^2 + 3760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99385889 is a prime.

It is not a weakly prime, because it can be changed into another prime (99385883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49692944 + 49692945.

It is an arithmetic number, because the mean of its divisors is an integer number (49692945).

Almost surely, 2^99385889 is an apocalyptic number.

It is an amenable number.

99385889 is a deficient number, since it is larger than the sum of its proper divisors (1).

99385889 is an equidigital number, since it uses as much as digits as its factorization.

99385889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5598720, while the sum is 59.

The square root of 99385889 is about 9969.2471631513. The cubic root of 99385889 is about 463.2067814524.

The spelling of 99385889 in words is "ninety-nine million, three hundred eighty-five thousand, eight hundred eighty-nine".