99368989 has 2 divisors, whose sum is σ = 99368990. Its totient is φ = 99368988.

The previous prime is 99368963. The next prime is 99369037. The reversal of 99368989 is 98986399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98843364 + 525625 = 9942^2 + 725^2 .

It is a cyclic number.

It is not a de Polignac number, because 99368989 - 2⁵ = 99368957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99368909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49684494 + 49684495.

It is an arithmetic number, because the mean of its divisors is an integer number (49684495).

Almost surely, 2^99368989 is an apocalyptic number.

It is an amenable number.

99368989 is a deficient number, since it is larger than the sum of its proper divisors (1).

99368989 is an equidigital number, since it uses as much as digits as its factorization.

99368989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7558272, while the sum is 61.

The square root of 99368989 is about 9968.3995204847. The cubic root of 99368989 is about 463.1805247459.

The spelling of 99368989 in words is "ninety-nine million, three hundred sixty-eight thousand, nine hundred eighty-nine".