22408229 has 2 divisors, whose sum is σ = 22408230. Its totient is φ = 22408228.

The previous prime is 22408207. The next prime is 22408247. The reversal of 22408229 is 92280422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12264004 + 10144225 = 3502^2 + 3185^2 .

It is a cyclic number.

It is not a de Polignac number, because 22408229 - 2¹⁶ = 22342693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22401229) 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, 11204114 + 11204115.

It is an arithmetic number, because the mean of its divisors is an integer number (11204115).

Almost surely, 2^22408229 is an apocalyptic number.

It is an amenable number.

22408229 is a deficient number, since it is larger than the sum of its proper divisors (1).

22408229 is an equidigital number, since it uses as much as digits as its factorization.

22408229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 22408229 is about 4733.7330934475. The cubic root of 22408229 is about 281.9264642357.

The spelling of 22408229 in words is "twenty-two million, four hundred eight thousand, two hundred twenty-nine".