22589989 has 2 divisors, whose sum is σ = 22589990. Its totient is φ = 22589988.

The previous prime is 22589977. The next prime is 22590011. The reversal of 22589989 is 98998522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21696964 + 893025 = 4658^2 + 945^2 .

It is a cyclic number.

It is not a de Polignac number, because 22589989 - 2⁹ = 22589477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22581989) 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, 11294994 + 11294995.

It is an arithmetic number, because the mean of its divisors is an integer number (11294995).

Almost surely, 2^22589989 is an apocalyptic number.

It is an amenable number.

22589989 is a deficient number, since it is larger than the sum of its proper divisors (1).

22589989 is an equidigital number, since it uses as much as digits as its factorization.

22589989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 52.

The square root of 22589989 is about 4752.8926981366. The cubic root of 22589989 is about 282.6866764184.

The spelling of 22589989 in words is "twenty-two million, five hundred eighty-nine thousand, nine hundred eighty-nine".