22443139 has 2 divisors, whose sum is σ = 22443140. Its totient is φ = 22443138.

The previous prime is 22443133. The next prime is 22443229. The reversal of 22443139 is 93134422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22443139 - 2³ = 22443131 is a prime.

It is not a weakly prime, because it can be changed into another prime (22443131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11221569 + 11221570.

It is an arithmetic number, because the mean of its divisors is an integer number (11221570).

Almost surely, 2^22443139 is an apocalyptic number.

22443139 is a deficient number, since it is larger than the sum of its proper divisors (1).

22443139 is an equidigital number, since it uses as much as digits as its factorization.

22443139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 28.

The square root of 22443139 is about 4737.4190230546. The cubic root of 22443139 is about 282.0727936084.

The spelling of 22443139 in words is "twenty-two million, four hundred forty-three thousand, one hundred thirty-nine".