239422189 has 2 divisors, whose sum is σ = 239422190. Its totient is φ = 239422188.

The previous prime is 239422187. The next prime is 239422199. The reversal of 239422189 is 981224932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231952900 + 7469289 = 15230^2 + 2733^2 .

It is a cyclic number.

It is not a de Polignac number, because 239422189 - 2¹ = 239422187 is a prime.

Together with 239422187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239422187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119711094 + 119711095.

It is an arithmetic number, because the mean of its divisors is an integer number (119711095).

Almost surely, 2^239422189 is an apocalyptic number.

It is an amenable number.

239422189 is a deficient number, since it is larger than the sum of its proper divisors (1).

239422189 is an equidigital number, since it uses as much as digits as its factorization.

239422189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 239422189 is about 15473.2733770201. The cubic root of 239422189 is about 620.9473801124.

The spelling of 239422189 in words is "two hundred thirty-nine million, four hundred twenty-two thousand, one hundred eighty-nine".