199996141 has 2 divisors, whose sum is σ = 199996142.
Its totient is φ = 199996140.
The previous prime is 199996117. The next prime is 199996157. The reversal of 199996141 is 141699991.
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., 197290116 + 2706025 = 14046^2 + 1645^2
It is an emirp because it is prime and its reverse (141699991) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-199996141 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (199996241) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99998070 + 99998071.
It is an arithmetic number, because the mean of its divisors is an integer number (99998071).
Almost surely, 2199996141 is an apocalyptic number.
It is an amenable number.
199996141 is a deficient number, since it is larger than the sum of its proper divisors (1).
199996141 is an equidigital number, since it uses as much as digits as its factorization.
199996141 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 157464, while the sum is 49.
The square root of 199996141 is about 14141.9991868194.
Note that the first 3 decimals coincide.
The cubic root of 199996141 is about 584.7997863569.
The spelling of 199996141 in words is "one hundred ninety-nine million, nine hundred ninety-six thousand, one hundred forty-one".