99259109 has 2 divisors, whose sum is σ = 99259110. Its totient is φ = 99259108.

The previous prime is 99259081. The next prime is 99259151. The reversal of 99259109 is 90195299.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68145025 + 31114084 = 8255^2 + 5578^2 .

It is a cyclic number.

It is not a de Polignac number, because 99259109 - 2⁸ = 99258853 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 99259109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99259169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49629554 + 49629555.

It is an arithmetic number, because the mean of its divisors is an integer number (49629555).

Almost surely, 2^99259109 is an apocalyptic number.

It is an amenable number.

99259109 is a deficient number, since it is larger than the sum of its proper divisors (1).

99259109 is an equidigital number, since it uses as much as digits as its factorization.

99259109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65610, while the sum is 44.

The square root of 99259109 is about 9962.8865797017. The cubic root of 99259109 is about 463.0097368996.

The spelling of 99259109 in words is "ninety-nine million, two hundred fifty-nine thousand, one hundred nine".