22409999 has 2 divisors, whose sum is σ = 22410000. Its totient is φ = 22409998.

The previous prime is 22409983. The next prime is 22410013. The reversal of 22409999 is 99990422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22409999 - 2⁴ = 22409983 is a prime.

It is a Chen prime.

22409999 is a modest number, since divided by 9999 gives 2240 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22409969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11204999 + 11205000.

It is an arithmetic number, because the mean of its divisors is an integer number (11205000).

Almost surely, 2^22409999 is an apocalyptic number.

22409999 is a deficient number, since it is larger than the sum of its proper divisors (1).

22409999 is an equidigital number, since it uses as much as digits as its factorization.

22409999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 22409999 is about 4733.9200457971. The cubic root of 22409999 is about 281.9338870550.

The spelling of 22409999 in words is "twenty-two million, four hundred nine thousand, nine hundred ninety-nine".