159999289 has 2 divisors, whose sum is σ = 159999290. Its totient is φ = 159999288.

The previous prime is 159999239. The next prime is 159999311. The reversal of 159999289 is 982999951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109830400 + 50168889 = 10480^2 + 7083^2 .

It is an emirp because it is prime and its reverse (982999951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 159999289 - 2⁹ = 159998777 is a prime.

It is not a weakly prime, because it can be changed into another prime (159999239) 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, 79999644 + 79999645.

It is an arithmetic number, because the mean of its divisors is an integer number (79999645).

Almost surely, 2^159999289 is an apocalyptic number.

It is an amenable number.

159999289 is a deficient number, since it is larger than the sum of its proper divisors (1).

159999289 is an equidigital number, since it uses as much as digits as its factorization.

159999289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4723920, while the sum is 61.

The square root of 159999289 is about 12649.0825358996. The cubic root of 159999289 is about 542.8827191716.

The spelling of 159999289 in words is "one hundred fifty-nine million, nine hundred ninety-nine thousand, two hundred eighty-nine".