22164239 has 2 divisors, whose sum is σ = 22164240. Its totient is φ = 22164238.

The previous prime is 22164227. The next prime is 22164253. The reversal of 22164239 is 93246122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22164239 - 2²⁴ = 5387023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22164139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11082119 + 11082120.

It is an arithmetic number, because the mean of its divisors is an integer number (11082120).

Almost surely, 2^22164239 is an apocalyptic number.

22164239 is a deficient number, since it is larger than the sum of its proper divisors (1).

22164239 is an equidigital number, since it uses as much as digits as its factorization.

22164239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

The square root of 22164239 is about 4707.8911414773. The cubic root of 22164239 is about 280.8994840651.

The spelling of 22164239 in words is "twenty-two million, one hundred sixty-four thousand, two hundred thirty-nine".