199890283 has 2 divisors, whose sum is σ = 199890284. Its totient is φ = 199890282.

The previous prime is 199890281. The next prime is 199890307. The reversal of 199890283 is 382098991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199890283 - 2¹ = 199890281 is a prime.

It is a super-2 number, since 2×199890283² = 79912250475640178, which contains 22 as substring.

Together with 199890281, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (199890281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99945141 + 99945142.

It is an arithmetic number, because the mean of its divisors is an integer number (99945142).

Almost surely, 2^199890283 is an apocalyptic number.

199890283 is a deficient number, since it is larger than the sum of its proper divisors (1).

199890283 is an equidigital number, since it uses as much as digits as its factorization.

199890283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 49.

The square root of 199890283 is about 14138.2560098479. The cubic root of 199890283 is about 584.6965899303.

The spelling of 199890283 in words is "one hundred ninety-nine million, eight hundred ninety thousand, two hundred eighty-three".