9099899 has 2 divisors, whose sum is σ = 9099900. Its totient is φ = 9099898.

The previous prime is 9099889. The next prime is 9099901. The reversal of 9099899 is 9989909.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9099899 is a prime.

Together with 9099901, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9099899.

It is not a weakly prime, because it can be changed into another prime (9099809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4549949 + 4549950.

It is an arithmetic number, because the mean of its divisors is an integer number (4549950).

Almost surely, 2^9099899 is an apocalyptic number.

9099899 is a deficient number, since it is larger than the sum of its proper divisors (1).

9099899 is an equidigital number, since it uses as much as digits as its factorization.

9099899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 472392, while the sum is 53.

The square root of 9099899 is about 3016.6038851662. The cubic root of 9099899 is about 208.7751754690.

The spelling of 9099899 in words is "nine million, ninety-nine thousand, eight hundred ninety-nine".