199079443 has 2 divisors, whose sum is σ = 199079444. Its totient is φ = 199079442.

The previous prime is 199079437. The next prime is 199079471. The reversal of 199079443 is 344970991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199079443 - 2⁵ = 199079411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 199079393 and 199079402.

It is not a weakly prime, because it can be changed into another prime (199079423) 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, 99539721 + 99539722.

It is an arithmetic number, because the mean of its divisors is an integer number (99539722).

Almost surely, 2^199079443 is an apocalyptic number.

199079443 is a deficient number, since it is larger than the sum of its proper divisors (1).

199079443 is an equidigital number, since it uses as much as digits as its factorization.

199079443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 199079443 is about 14109.5514811776. The cubic root of 199079443 is about 583.9049258424.

The spelling of 199079443 in words is "one hundred ninety-nine million, seventy-nine thousand, four hundred forty-three".