22424239 has 2 divisors, whose sum is σ = 22424240. Its totient is φ = 22424238.

The previous prime is 22424231. The next prime is 22424249. The reversal of 22424239 is 93242422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22424239 - 2³ = 22424231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22424231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11212119 + 11212120.

It is an arithmetic number, because the mean of its divisors is an integer number (11212120).

Almost surely, 2^22424239 is an apocalyptic number.

22424239 is a deficient number, since it is larger than the sum of its proper divisors (1).

22424239 is an equidigital number, since it uses as much as digits as its factorization.

22424239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 28.

The square root of 22424239 is about 4735.4238458664. The cubic root of 22424239 is about 281.9935908877.

The spelling of 22424239 in words is "twenty-two million, four hundred twenty-four thousand, two hundred thirty-nine".