99898079 has 2 divisors, whose sum is σ = 99898080. Its totient is φ = 99898078.

The previous prime is 99898061. The next prime is 99898081. The reversal of 99898079 is 97089899.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99898079 is a prime.

Together with 99898081, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99898009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49949039 + 49949040.

It is an arithmetic number, because the mean of its divisors is an integer number (49949040).

Almost surely, 2^99898079 is an apocalyptic number.

99898079 is a deficient number, since it is larger than the sum of its proper divisors (1).

99898079 is an equidigital number, since it uses as much as digits as its factorization.

99898079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 59.

The square root of 99898079 is about 9994.9026508516. The cubic root of 99898079 is about 464.0011379654.

The spelling of 99898079 in words is "ninety-nine million, eight hundred ninety-eight thousand, seventy-nine".