159169939 has 2 divisors, whose sum is σ = 159169940. Its totient is φ = 159169938.

The previous prime is 159169891. The next prime is 159169943. The reversal of 159169939 is 939961951.

It is a strong prime.

It is an emirp because it is prime and its reverse (939961951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 159169939 - 2⁷ = 159169811 is a prime.

It is not a weakly prime, because it can be changed into another prime (159169949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79584969 + 79584970.

It is an arithmetic number, because the mean of its divisors is an integer number (79584970).

Almost surely, 2^159169939 is an apocalyptic number.

159169939 is a deficient number, since it is larger than the sum of its proper divisors (1).

159169939 is an equidigital number, since it uses as much as digits as its factorization.

159169939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 590490, while the sum is 52.

The square root of 159169939 is about 12616.2569330210. The cubic root of 159169939 is about 541.9430900700.

The spelling of 159169939 in words is "one hundred fifty-nine million, one hundred sixty-nine thousand, nine hundred thirty-nine".