199906159 has 2 divisors, whose sum is σ = 199906160. Its totient is φ = 199906158.

The previous prime is 199906129. The next prime is 199906177. The reversal of 199906159 is 951609991.

It is a strong prime.

It is an emirp because it is prime and its reverse (951609991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199906159 - 2⁵ = 199906127 is a prime.

It is a super-3 number, since 3×199906159³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199906129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99953079 + 99953080.

It is an arithmetic number, because the mean of its divisors is an integer number (99953080).

Almost surely, 2^199906159 is an apocalyptic number.

199906159 is a deficient number, since it is larger than the sum of its proper divisors (1).

199906159 is an equidigital number, since it uses as much as digits as its factorization.

199906159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196830, while the sum is 49.

The square root of 199906159 is about 14138.8174540872. The cubic root of 199906159 is about 584.7120690842.

The spelling of 199906159 in words is "one hundred ninety-nine million, nine hundred six thousand, one hundred fifty-nine".