22985689 has 2 divisors, whose sum is σ = 22985690. Its totient is φ = 22985688.

The previous prime is 22985659. The next prime is 22985701. The reversal of 22985689 is 98658922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17264025 + 5721664 = 4155^2 + 2392^2 .

It is a cyclic number.

It is not a de Polignac number, because 22985689 - 2⁷ = 22985561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22985629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11492844 + 11492845.

It is an arithmetic number, because the mean of its divisors is an integer number (11492845).

Almost surely, 2^22985689 is an apocalyptic number.

It is an amenable number.

22985689 is a deficient number, since it is larger than the sum of its proper divisors (1).

22985689 is an equidigital number, since it uses as much as digits as its factorization.

22985689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 49.

The square root of 22985689 is about 4794.3392662597. The cubic root of 22985689 is about 284.3277022976.

The spelling of 22985689 in words is "twenty-two million, nine hundred eighty-five thousand, six hundred eighty-nine".