199760291 has 2 divisors, whose sum is σ = 199760292. Its totient is φ = 199760290.

The previous prime is 199760219. The next prime is 199760317. The reversal of 199760291 is 192067991.

199760291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (199760219) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199760291 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (199760201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99880145 + 99880146.

It is an arithmetic number, because the mean of its divisors is an integer number (99880146).

Almost surely, 2^199760291 is an apocalyptic number.

199760291 is a deficient number, since it is larger than the sum of its proper divisors (1).

199760291 is an equidigital number, since it uses as much as digits as its factorization.

199760291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 44.

The square root of 199760291 is about 14133.6580898223. The cubic root of 199760291 is about 584.5698164492.

The spelling of 199760291 in words is "one hundred ninety-nine million, seven hundred sixty thousand, two hundred ninety-one".