22993189 has 2 divisors, whose sum is σ = 22993190. Its totient is φ = 22993188.

The previous prime is 22993183. The next prime is 22993193. The reversal of 22993189 is 98139922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15864289 + 7128900 = 3983^2 + 2670^2 .

It is a cyclic number.

It is not a de Polignac number, because 22993189 - 2³ = 22993181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22993181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11496594 + 11496595.

It is an arithmetic number, because the mean of its divisors is an integer number (11496595).

Almost surely, 2^22993189 is an apocalyptic number.

It is an amenable number.

22993189 is a deficient number, since it is larger than the sum of its proper divisors (1).

22993189 is an equidigital number, since it uses as much as digits as its factorization.

22993189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 43.

The square root of 22993189 is about 4795.1213748976. The cubic root of 22993189 is about 284.3586233616.

The spelling of 22993189 in words is "twenty-two million, nine hundred ninety-three thousand, one hundred eighty-nine".