199224943 has 2 divisors, whose sum is σ = 199224944. Its totient is φ = 199224942.

The previous prime is 199224923. The next prime is 199224959. The reversal of 199224943 is 349422991.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199224943 - 2⁵ = 199224911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199224943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199224923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99612471 + 99612472.

It is an arithmetic number, because the mean of its divisors is an integer number (99612472).

Almost surely, 2^199224943 is an apocalyptic number.

199224943 is a deficient number, since it is larger than the sum of its proper divisors (1).

199224943 is an equidigital number, since it uses as much as digits as its factorization.

199224943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 43.

The square root of 199224943 is about 14114.7066211098. The cubic root of 199224943 is about 584.0471428995.

The spelling of 199224943 in words is "one hundred ninety-nine million, two hundred twenty-four thousand, nine hundred forty-three".