199368427 has 2 divisors, whose sum is σ = 199368428. Its totient is φ = 199368426.

The previous prime is 199368419. The next prime is 199368431. The reversal of 199368427 is 724863991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199368427 - 2³ = 199368419 is a prime.

It is not a weakly prime, because it can be changed into another prime (199368227) 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, 99684213 + 99684214.

It is an arithmetic number, because the mean of its divisors is an integer number (99684214).

Almost surely, 2^199368427 is an apocalyptic number.

199368427 is a deficient number, since it is larger than the sum of its proper divisors (1).

199368427 is an equidigital number, since it uses as much as digits as its factorization.

199368427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 49.

The square root of 199368427 is about 14119.7884899173. The cubic root of 199368427 is about 584.1873216488.

The spelling of 199368427 in words is "one hundred ninety-nine million, three hundred sixty-eight thousand, four hundred twenty-seven".