159009889 has 2 divisors, whose sum is σ = 159009890. Its totient is φ = 159009888.

The previous prime is 159009863. The next prime is 159009899. The reversal of 159009889 is 988900951.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149646289 + 9363600 = 12233^2 + 3060^2 .

It is a cyclic number.

It is not a de Polignac number, because 159009889 - 2⁹ = 159009377 is a prime.

It is not a weakly prime, because it can be changed into another prime (159009899) 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, 79504944 + 79504945.

It is an arithmetic number, because the mean of its divisors is an integer number (79504945).

Almost surely, 2^159009889 is an apocalyptic number.

It is an amenable number.

159009889 is a deficient number, since it is larger than the sum of its proper divisors (1).

159009889 is an equidigital number, since it uses as much as digits as its factorization.

159009889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 49.

The square root of 159009889 is about 12609.9123311782. The cubic root of 159009889 is about 541.7613826428.

The spelling of 159009889 in words is "one hundred fifty-nine million, nine thousand, eight hundred eighty-nine".