224232209 has 2 divisors, whose sum is σ = 224232210. Its totient is φ = 224232208.

The previous prime is 224232191. The next prime is 224232223. The reversal of 224232209 is 902232422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223592209 + 640000 = 14953^2 + 800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224232209 is a prime.

It is not a weakly prime, because it can be changed into another prime (224232259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112116104 + 112116105.

It is an arithmetic number, because the mean of its divisors is an integer number (112116105).

Almost surely, 2^224232209 is an apocalyptic number.

It is an amenable number.

224232209 is a deficient number, since it is larger than the sum of its proper divisors (1).

224232209 is an equidigital number, since it uses as much as digits as its factorization.

224232209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 224232209 is about 14974.3850958896. The cubic root of 224232209 is about 607.5275800222.

The spelling of 224232209 in words is "two hundred twenty-four million, two hundred thirty-two thousand, two hundred nine".