159549889 has 2 divisors, whose sum is σ = 159549890. Its totient is φ = 159549888.

The previous prime is 159549881. The next prime is 159549893. The reversal of 159549889 is 988945951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125619264 + 33930625 = 11208^2 + 5825^2 .

It is a cyclic number.

It is not a de Polignac number, because 159549889 - 2³ = 159549881 is a prime.

It is not a weakly prime, because it can be changed into another prime (159549881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79774944 + 79774945.

It is an arithmetic number, because the mean of its divisors is an integer number (79774945).

Almost surely, 2^159549889 is an apocalyptic number.

It is an amenable number.

159549889 is a deficient number, since it is larger than the sum of its proper divisors (1).

159549889 is an equidigital number, since it uses as much as digits as its factorization.

159549889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4665600, while the sum is 58.

The square root of 159549889 is about 12631.3059103166. The cubic root of 159549889 is about 542.3739663474.

The spelling of 159549889 in words is "one hundred fifty-nine million, five hundred forty-nine thousand, eight hundred eighty-nine".