22398239 has 2 divisors, whose sum is σ = 22398240. Its totient is φ = 22398238.

The previous prime is 22398221. The next prime is 22398247. The reversal of 22398239 is 93289322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22398239 - 2⁸ = 22397983 is a prime.

It is a super-2 number, since 2×22398239² = 1003362220602242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22398289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11199119 + 11199120.

It is an arithmetic number, because the mean of its divisors is an integer number (11199120).

Almost surely, 2^22398239 is an apocalyptic number.

22398239 is a deficient number, since it is larger than the sum of its proper divisors (1).

22398239 is an equidigital number, since it uses as much as digits as its factorization.

22398239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 38.

The square root of 22398239 is about 4732.6777832428. The cubic root of 22398239 is about 281.8845620098.

The spelling of 22398239 in words is "twenty-two million, three hundred ninety-eight thousand, two hundred thirty-nine".