239879089 has 2 divisors, whose sum is σ = 239879090. Its totient is φ = 239879088.

The previous prime is 239879083. The next prime is 239879137. The reversal of 239879089 is 980978932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129208689 + 110670400 = 11367^2 + 10520^2 .

It is a cyclic number.

It is not a de Polignac number, because 239879089 - 2²¹ = 237781937 is a prime.

It is not a weakly prime, because it can be changed into another prime (239879083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119939544 + 119939545.

It is an arithmetic number, because the mean of its divisors is an integer number (119939545).

Almost surely, 2^239879089 is an apocalyptic number.

It is an amenable number.

239879089 is a deficient number, since it is larger than the sum of its proper divisors (1).

239879089 is an equidigital number, since it uses as much as digits as its factorization.

239879089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The square root of 239879089 is about 15488.0305074596. The cubic root of 239879089 is about 621.3421229411.

The spelling of 239879089 in words is "two hundred thirty-nine million, eight hundred seventy-nine thousand, eighty-nine".