22439189 has 2 divisors, whose sum is σ = 22439190. Its totient is φ = 22439188.

The previous prime is 22439119. The next prime is 22439227. The reversal of 22439189 is 98193422.

It is an a-pointer prime, because the next prime (22439227) can be obtained adding 22439189 to its sum of digits (38).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12567025 + 9872164 = 3545^2 + 3142^2 .

It is a cyclic number.

It is not a de Polignac number, because 22439189 - 2¹² = 22435093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22439119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11219594 + 11219595.

It is an arithmetic number, because the mean of its divisors is an integer number (11219595).

Almost surely, 2^22439189 is an apocalyptic number.

It is an amenable number.

22439189 is a deficient number, since it is larger than the sum of its proper divisors (1).

22439189 is an equidigital number, since it uses as much as digits as its factorization.

22439189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The square root of 22439189 is about 4737.0021110403. The cubic root of 22439189 is about 282.0562443353.

The spelling of 22439189 in words is "twenty-two million, four hundred thirty-nine thousand, one hundred eighty-nine".