99609329 has 2 divisors, whose sum is σ = 99609330. Its totient is φ = 99609328.

The previous prime is 99609317. The next prime is 99609337. The reversal of 99609329 is 92390699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86118400 + 13490929 = 9280^2 + 3673^2 .

It is a cyclic number.

It is not a de Polignac number, because 99609329 - 2⁸ = 99609073 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (99609359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49804664 + 49804665.

It is an arithmetic number, because the mean of its divisors is an integer number (49804665).

Almost surely, 2^99609329 is an apocalyptic number.

It is an amenable number.

99609329 is a deficient number, since it is larger than the sum of its proper divisors (1).

99609329 is an equidigital number, since it uses as much as digits as its factorization.

99609329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 236196, while the sum is 47.

The square root of 99609329 is about 9980.4473346639. The cubic root of 99609329 is about 463.5536498013.

The spelling of 99609329 in words is "ninety-nine million, six hundred nine thousand, three hundred twenty-nine".