22405169 has 2 divisors, whose sum is σ = 22405170. Its totient is φ = 22405168.

The previous prime is 22405153. The next prime is 22405181. The reversal of 22405169 is 96150422.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19254544 + 3150625 = 4388^2 + 1775^2 .

It is a cyclic number.

It is not a de Polignac number, because 22405169 - 2⁴ = 22405153 is a prime.

It is a super-2 number, since 2×22405169² = 1003983195837122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22405069) 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, 11202584 + 11202585.

It is an arithmetic number, because the mean of its divisors is an integer number (11202585).

Almost surely, 2^22405169 is an apocalyptic number.

It is an amenable number.

22405169 is a deficient number, since it is larger than the sum of its proper divisors (1).

22405169 is an equidigital number, since it uses as much as digits as its factorization.

22405169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 22405169 is about 4733.4098702732. The cubic root of 22405169 is about 281.9136306430.

The spelling of 22405169 in words is "twenty-two million, four hundred five thousand, one hundred sixty-nine".