99609929 has 2 divisors, whose sum is σ = 99609930. Its totient is φ = 99609928.

The previous prime is 99609899. The next prime is 99609943. The reversal of 99609929 is 92990699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79566400 + 20043529 = 8920^2 + 4477^2 .

It is a cyclic number.

It is not a de Polignac number, because 99609929 - 2⁸ = 99609673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99609329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49804964 + 49804965.

It is an arithmetic number, because the mean of its divisors is an integer number (49804965).

Almost surely, 2^99609929 is an apocalyptic number.

It is an amenable number.

99609929 is a deficient number, since it is larger than the sum of its proper divisors (1).

99609929 is an equidigital number, since it uses as much as digits as its factorization.

99609929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 708588, while the sum is 53.

The square root of 99609929 is about 9980.4773933916. The cubic root of 99609929 is about 463.5545805429.

The spelling of 99609929 in words is "ninety-nine million, six hundred nine thousand, nine hundred twenty-nine".