99089 has 2 divisors, whose sum is σ = 99090. Its totient is φ = 99088.

The previous prime is 99083. The next prime is 99103. The reversal of 99089 is 98099.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94864 + 4225 = 308^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 99089 - 2¹² = 94993 is a prime.

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 (99083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49544 + 49545.

It is an arithmetic number, because the mean of its divisors is an integer number (49545).

2⁹⁹⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

99089 is a deficient number, since it is larger than the sum of its proper divisors (1).

99089 is an equidigital number, since it uses as much as digits as its factorization.

99089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 99089 is about 314.7840529633. The cubic root of 99089 is about 46.2745085588.

Subtracting from 99089 its reverse (98099), we obtain a triangular number (990 = T₄₄).

The spelling of 99089 in words is "ninety-nine thousand, eighty-nine".