22509299 has 2 divisors, whose sum is σ = 22509300. Its totient is φ = 22509298.

The previous prime is 22509251. The next prime is 22509301. The reversal of 22509299 is 99290522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22509299 - 2²⁰ = 21460723 is a prime.

It is a Sophie Germain prime.

Together with 22509301, 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 (22509229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11254649 + 11254650.

It is an arithmetic number, because the mean of its divisors is an integer number (11254650).

Almost surely, 2^22509299 is an apocalyptic number.

22509299 is a deficient number, since it is larger than the sum of its proper divisors (1).

22509299 is an equidigital number, since it uses as much as digits as its factorization.

22509299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 22509299 is about 4744.3965896624. The cubic root of 22509299 is about 282.3496952811.

The spelling of 22509299 in words is "twenty-two million, five hundred nine thousand, two hundred ninety-nine".