159994717 has 2 divisors, whose sum is σ = 159994718. Its totient is φ = 159994716.

The previous prime is 159994691. The next prime is 159994729. The reversal of 159994717 is 717499951.

159994717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159112996 + 881721 = 12614^2 + 939^2 .

It is a cyclic number.

It is not a de Polignac number, because 159994717 - 2¹⁹ = 159470429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159994777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79997358 + 79997359.

It is an arithmetic number, because the mean of its divisors is an integer number (79997359).

Almost surely, 2^159994717 is an apocalyptic number.

It is an amenable number.

159994717 is a deficient number, since it is larger than the sum of its proper divisors (1).

159994717 is an equidigital number, since it uses as much as digits as its factorization.

159994717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 714420, while the sum is 52.

The square root of 159994717 is about 12648.9018100387. The cubic root of 159994717 is about 542.8775481414.

The spelling of 159994717 in words is "one hundred fifty-nine million, nine hundred ninety-four thousand, seven hundred seventeen".