199007443 has 2 divisors, whose sum is σ = 199007444. Its totient is φ = 199007442.

The previous prime is 199007441. The next prime is 199007453. The reversal of 199007443 is 344700991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199007443 - 2¹ = 199007441 is a prime.

Together with 199007441, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (199007441) 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, 99503721 + 99503722.

It is an arithmetic number, because the mean of its divisors is an integer number (99503722).

Almost surely, 2^199007443 is an apocalyptic number.

199007443 is a deficient number, since it is larger than the sum of its proper divisors (1).

199007443 is an equidigital number, since it uses as much as digits as its factorization.

199007443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 199007443 is about 14106.9997873396. Note that the first 3 decimals coincide. The cubic root of 199007443 is about 583.8345247615.

The spelling of 199007443 in words is "one hundred ninety-nine million, seven thousand, four hundred forty-three".