199882427 has 2 divisors, whose sum is σ = 199882428. Its totient is φ = 199882426.

The previous prime is 199882411. The next prime is 199882429. The reversal of 199882427 is 724288991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199882427 - 2⁴ = 199882411 is a prime.

Together with 199882429, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (199882429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99941213 + 99941214.

It is an arithmetic number, because the mean of its divisors is an integer number (99941214).

Almost surely, 2^199882427 is an apocalyptic number.

199882427 is a deficient number, since it is larger than the sum of its proper divisors (1).

199882427 is an equidigital number, since it uses as much as digits as its factorization.

199882427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 50.

The square root of 199882427 is about 14137.9781793579. The cubic root of 199882427 is about 584.6889300006.

The spelling of 199882427 in words is "one hundred ninety-nine million, eight hundred eighty-two thousand, four hundred twenty-seven".