22424249 has 2 divisors, whose sum is σ = 22424250. Its totient is φ = 22424248.

The previous prime is 22424239. The next prime is 22424261. The reversal of 22424249 is 94242422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13454224 + 8970025 = 3668^2 + 2995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22424249 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22424209) 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, 11212124 + 11212125.

It is an arithmetic number, because the mean of its divisors is an integer number (11212125).

Almost surely, 2^22424249 is an apocalyptic number.

It is an amenable number.

22424249 is a deficient number, since it is larger than the sum of its proper divisors (1).

22424249 is an equidigital number, since it uses as much as digits as its factorization.

22424249 is an odious number, because the sum of its binary digits is odd.

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

The square root of 22424249 is about 4735.4249017380. The cubic root of 22424249 is about 281.9936328056.

The spelling of 22424249 in words is "twenty-two million, four hundred twenty-four thousand, two hundred forty-nine".