22929239 has 2 divisors, whose sum is σ = 22929240. Its totient is φ = 22929238.

The previous prime is 22929223. The next prime is 22929241. The reversal of 22929239 is 93292922.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22929239 - 2⁴ = 22929223 is a prime.

It is a super-2 number, since 2×22929239² = 1051500002238242, which contains 22 as substring.

Together with 22929241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22929259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11464619 + 11464620.

It is an arithmetic number, because the mean of its divisors is an integer number (11464620).

Almost surely, 2^22929239 is an apocalyptic number.

22929239 is a deficient number, since it is larger than the sum of its proper divisors (1).

22929239 is an equidigital number, since it uses as much as digits as its factorization.

22929239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 38.

The square root of 22929239 is about 4788.4484961206. The cubic root of 22929239 is about 284.0947536438.

The spelling of 22929239 in words is "twenty-two million, nine hundred twenty-nine thousand, two hundred thirty-nine".