159243839 has 2 divisors, whose sum is σ = 159243840. Its totient is φ = 159243838.

The previous prime is 159243827. The next prime is 159243857. The reversal of 159243839 is 938342951.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 159243839 - 2⁸ = 159243583 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 159243839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159243809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79621919 + 79621920.

It is an arithmetic number, because the mean of its divisors is an integer number (79621920).

Almost surely, 2^159243839 is an apocalyptic number.

159243839 is a deficient number, since it is larger than the sum of its proper divisors (1).

159243839 is an equidigital number, since it uses as much as digits as its factorization.

159243839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 44.

The square root of 159243839 is about 12619.1853540551. The cubic root of 159243839 is about 542.0269488650.

The spelling of 159243839 in words is "one hundred fifty-nine million, two hundred forty-three thousand, eight hundred thirty-nine".