22389589 has 2 divisors, whose sum is σ = 22389590. Its totient is φ = 22389588.

The previous prime is 22389571. The next prime is 22389599. The reversal of 22389589 is 98598322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20520900 + 1868689 = 4530^2 + 1367^2 .

It is a cyclic number.

It is not a de Polignac number, because 22389589 - 2⁹ = 22389077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22389529) 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, 11194794 + 11194795.

It is an arithmetic number, because the mean of its divisors is an integer number (11194795).

Almost surely, 2^22389589 is an apocalyptic number.

It is an amenable number.

22389589 is a deficient number, since it is larger than the sum of its proper divisors (1).

22389589 is an equidigital number, since it uses as much as digits as its factorization.

22389589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 46.

The square root of 22389589 is about 4731.7638360341. The cubic root of 22389589 is about 281.8482702369.

The spelling of 22389589 in words is "twenty-two million, three hundred eighty-nine thousand, five hundred eighty-nine".