9909099899 has 2 divisors, whose sum is σ = 9909099900. Its totient is φ = 9909099898.

The previous prime is 9909099853. The next prime is 9909099901. The reversal of 9909099899 is 9989909099.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9909099899 is a prime.

Together with 9909099901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9909099199) 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, 4954549949 + 4954549950.

It is an arithmetic number, because the mean of its divisors is an integer number (4954549950).

Almost surely, 2^9909099899 is an apocalyptic number.

9909099899 is a deficient number, since it is larger than the sum of its proper divisors (1).

9909099899 is an equidigital number, since it uses as much as digits as its factorization.

9909099899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38263752, while the sum is 71.

The square root of 9909099899 is about 99544.4619202897. The cubic root of 9909099899 is about 2147.8868654775.

The spelling of 9909099899 in words is "nine billion, nine hundred nine million, ninety-nine thousand, eight hundred ninety-nine".