159987199 has 2 divisors, whose sum is σ = 159987200. Its totient is φ = 159987198.

The previous prime is 159987197. The next prime is 159987209. The reversal of 159987199 is 991789951.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 159987199 - 2¹ = 159987197 is a prime.

Together with 159987197, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159987197) 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, 79993599 + 79993600.

It is an arithmetic number, because the mean of its divisors is an integer number (79993600).

Almost surely, 2^159987199 is an apocalyptic number.

159987199 is a deficient number, since it is larger than the sum of its proper divisors (1).

159987199 is an equidigital number, since it uses as much as digits as its factorization.

159987199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1837080, while the sum is 58.

The square root of 159987199 is about 12648.6046265981. The cubic root of 159987199 is about 542.8690449079.

The spelling of 159987199 in words is "one hundred fifty-nine million, nine hundred eighty-seven thousand, one hundred ninety-nine".