99838489 has 2 divisors, whose sum is σ = 99838490. Its totient is φ = 99838488.

The previous prime is 99838477. The next prime is 99838547. The reversal of 99838489 is 98483899.

It is an a-pointer prime, because the next prime (99838547) can be obtained adding 99838489 to its sum of digits (58).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94245264 + 5593225 = 9708^2 + 2365^2 .

It is a cyclic number.

It is not a de Polignac number, because 99838489 - 2²³ = 91449881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99838439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49919244 + 49919245.

It is an arithmetic number, because the mean of its divisors is an integer number (49919245).

Almost surely, 2^99838489 is an apocalyptic number.

It is an amenable number.

99838489 is a deficient number, since it is larger than the sum of its proper divisors (1).

99838489 is an equidigital number, since it uses as much as digits as its factorization.

99838489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4478976, while the sum is 58.

The square root of 99838489 is about 9991.9211866387. The cubic root of 99838489 is about 463.9088594895.

The spelling of 99838489 in words is "ninety-nine million, eight hundred thirty-eight thousand, four hundred eighty-nine".