22927189 has 2 divisors, whose sum is σ = 22927190. Its totient is φ = 22927188.

The previous prime is 22927187. The next prime is 22927283. The reversal of 22927189 is 98172922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22515025 + 412164 = 4745^2 + 642^2 .

It is a cyclic number.

It is not a de Polignac number, because 22927189 - 2¹ = 22927187 is a prime.

Together with 22927187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22927187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11463594 + 11463595.

It is an arithmetic number, because the mean of its divisors is an integer number (11463595).

Almost surely, 2^22927189 is an apocalyptic number.

It is an amenable number.

22927189 is a deficient number, since it is larger than the sum of its proper divisors (1).

22927189 is an equidigital number, since it uses as much as digits as its factorization.

22927189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 40.

The square root of 22927189 is about 4788.2344345280. The cubic root of 22927189 is about 284.0862868473.

The spelling of 22927189 in words is "twenty-two million, nine hundred twenty-seven thousand, one hundred eighty-nine".