159909941 has 2 divisors, whose sum is σ = 159909942. Its totient is φ = 159909940.

The previous prime is 159909917. The next prime is 159909977. The reversal of 159909941 is 149909951.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109641841 + 50268100 = 10471^2 + 7090^2 .

It is an emirp because it is prime and its reverse (149909951) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159909941 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159909341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79954970 + 79954971.

It is an arithmetic number, because the mean of its divisors is an integer number (79954971).

Almost surely, 2^159909941 is an apocalyptic number.

It is an amenable number.

159909941 is a deficient number, since it is larger than the sum of its proper divisors (1).

159909941 is an equidigital number, since it uses as much as digits as its factorization.

159909941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131220, while the sum is 47.

The square root of 159909941 is about 12645.5502450467. The cubic root of 159909941 is about 542.7816468122.

The spelling of 159909941 in words is "one hundred fifty-nine million, nine hundred nine thousand, nine hundred forty-one".