22244429 has 2 divisors, whose sum is σ = 22244430. Its totient is φ = 22244428.

The previous prime is 22244413. The next prime is 22244441. The reversal of 22244429 is 92444222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14235529 + 8008900 = 3773^2 + 2830^2 .

It is a cyclic number.

It is not a de Polignac number, because 22244429 - 2⁴ = 22244413 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22244129) 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, 11122214 + 11122215.

It is an arithmetic number, because the mean of its divisors is an integer number (11122215).

Almost surely, 2^22244429 is an apocalyptic number.

It is an amenable number.

22244429 is a deficient number, since it is larger than the sum of its proper divisors (1).

22244429 is an equidigital number, since it uses as much as digits as its factorization.

22244429 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 22244429 is about 4716.4000042405. The cubic root of 22244429 is about 281.2378401986.

The spelling of 22244429 in words is "twenty-two million, two hundred forty-four thousand, four hundred twenty-nine".