22029289 has 2 divisors, whose sum is σ = 22029290. Its totient is φ = 22029288.

The previous prime is 22029257. The next prime is 22029311. The reversal of 22029289 is 98292022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14953689 + 7075600 = 3867^2 + 2660^2 .

It is a cyclic number.

It is not a de Polignac number, because 22029289 - 2⁵ = 22029257 is a prime.

It is not a weakly prime, because it can be changed into another prime (22029209) 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, 11014644 + 11014645.

It is an arithmetic number, because the mean of its divisors is an integer number (11014645).

Almost surely, 2^22029289 is an apocalyptic number.

It is an amenable number.

22029289 is a deficient number, since it is larger than the sum of its proper divisors (1).

22029289 is an equidigital number, since it uses as much as digits as its factorization.

22029289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 22029289 is about 4693.5369392389. The cubic root of 22029289 is about 280.3282247881.

The spelling of 22029289 in words is "twenty-two million, twenty-nine thousand, two hundred eighty-nine".