22443229 has 2 divisors, whose sum is σ = 22443230. Its totient is φ = 22443228.

The previous prime is 22443139. The next prime is 22443233. The reversal of 22443229 is 92234422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20748025 + 1695204 = 4555^2 + 1302^2 .

It is a cyclic number.

It is not a de Polignac number, because 22443229 - 2¹³ = 22435037 is a prime.

It is equal to p_1415269 and since 22443229 and 1415269 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 22443197 and 22443206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22443329) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11221614 + 11221615.

It is an arithmetic number, because the mean of its divisors is an integer number (11221615).

Almost surely, 2^22443229 is an apocalyptic number.

It is an amenable number.

22443229 is a deficient number, since it is larger than the sum of its proper divisors (1).

22443229 is an equidigital number, since it uses as much as digits as its factorization.

22443229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 28.

The square root of 22443229 is about 4737.4285218882. The cubic root of 22443229 is about 282.0731706578.

The spelling of 22443229 in words is "twenty-two million, four hundred forty-three thousand, two hundred twenty-nine".