22259789 has 2 divisors, whose sum is σ = 22259790. Its totient is φ = 22259788.

The previous prime is 22259779. The next prime is 22259801. The reversal of 22259789 is 98795222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15342889 + 6916900 = 3917^2 + 2630^2 .

It is a cyclic number.

It is not a de Polignac number, because 22259789 - 2¹² = 22255693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22259719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11129894 + 11129895.

It is an arithmetic number, because the mean of its divisors is an integer number (11129895).

Almost surely, 2^22259789 is an apocalyptic number.

It is an amenable number.

22259789 is a deficient number, since it is larger than the sum of its proper divisors (1).

22259789 is an equidigital number, since it uses as much as digits as its factorization.

22259789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 22259789 is about 4718.0280838503. The cubic root of 22259789 is about 281.3025578157.

The spelling of 22259789 in words is "twenty-two million, two hundred fifty-nine thousand, seven hundred eighty-nine".