239219089 has 2 divisors, whose sum is σ = 239219090. Its totient is φ = 239219088.

The previous prime is 239219083. The next prime is 239219129. The reversal of 239219089 is 980912932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193210000 + 46009089 = 13900^2 + 6783^2 .

It is a cyclic number.

It is not a de Polignac number, because 239219089 - 2³ = 239219081 is a prime.

It is not a weakly prime, because it can be changed into another prime (239219081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119609544 + 119609545.

It is an arithmetic number, because the mean of its divisors is an integer number (119609545).

Almost surely, 2^239219089 is an apocalyptic number.

It is an amenable number.

239219089 is a deficient number, since it is larger than the sum of its proper divisors (1).

239219089 is an equidigital number, since it uses as much as digits as its factorization.

239219089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 239219089 is about 15466.7090552580. The cubic root of 239219089 is about 620.7717488132.

The spelling of 239219089 in words is "two hundred thirty-nine million, two hundred nineteen thousand, eighty-nine".