224424209 has 2 divisors, whose sum is σ = 224424210. Its totient is φ = 224424208.

The previous prime is 224424199. The next prime is 224424217. The reversal of 224424209 is 902424422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179158225 + 45265984 = 13385^2 + 6728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224424209 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (224424509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112212104 + 112212105.

It is an arithmetic number, because the mean of its divisors is an integer number (112212105).

Almost surely, 2^224424209 is an apocalyptic number.

It is an amenable number.

224424209 is a deficient number, since it is larger than the sum of its proper divisors (1).

224424209 is an equidigital number, since it uses as much as digits as its factorization.

224424209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 224424209 is about 14980.7946718457. The cubic root of 224424209 is about 607.7009301087.

The spelling of 224424209 in words is "two hundred twenty-four million, four hundred twenty-four thousand, two hundred nine".