99849089 has 2 divisors, whose sum is σ = 99849090. Its totient is φ = 99849088.

The previous prime is 99849067. The next prime is 99849091. The reversal of 99849089 is 98094899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99840064 + 9025 = 9992^2 + 95^2 .

It is a cyclic number.

It is not a de Polignac number, because 99849089 - 2¹² = 99844993 is a prime.

It is a Sophie Germain prime.

Together with 99849091, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (99849289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49924544 + 49924545.

It is an arithmetic number, because the mean of its divisors is an integer number (49924545).

Almost surely, 2^99849089 is an apocalyptic number.

It is an amenable number.

99849089 is a deficient number, since it is larger than the sum of its proper divisors (1).

99849089 is an equidigital number, since it uses as much as digits as its factorization.

99849089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 56.

The square root of 99849089 is about 9992.4516010837. The cubic root of 99849089 is about 463.9252768717.

The spelling of 99849089 in words is "ninety-nine million, eight hundred forty-nine thousand, eighty-nine".