199227443 has 2 divisors, whose sum is σ = 199227444. Its totient is φ = 199227442.

The previous prime is 199227389. The next prime is 199227451. The reversal of 199227443 is 344722991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199227443 - 2¹⁴ = 199211059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199227443.

It is not a weakly prime, because it can be changed into another prime (199227463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99613721 + 99613722.

It is an arithmetic number, because the mean of its divisors is an integer number (99613722).

Almost surely, 2^199227443 is an apocalyptic number.

199227443 is a deficient number, since it is larger than the sum of its proper divisors (1).

199227443 is an equidigital number, since it uses as much as digits as its factorization.

199227443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 199227443 is about 14114.7951809440. The cubic root of 199227443 is about 584.0495858863.

The spelling of 199227443 in words is "one hundred ninety-nine million, two hundred twenty-seven thousand, four hundred forty-three".