199270443 has 4 divisors (see below), whose sum is σ = 265693928. Its totient is φ = 132846960.

The previous prime is 199270439. The next prime is 199270457. The reversal of 199270443 is 344072991.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 199270443 - 2² = 199270439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199270403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33211738 + ... + 33211743.

It is an arithmetic number, because the mean of its divisors is an integer number (66423482).

Almost surely, 2^199270443 is an apocalyptic number.

199270443 is a deficient number, since it is larger than the sum of its proper divisors (66423485).

199270443 is an equidigital number, since it uses as much as digits as its factorization.

199270443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66423484.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 199270443 is about 14116.3183231323. The cubic root of 199270443 is about 584.0916020617.

The spelling of 199270443 in words is "one hundred ninety-nine million, two hundred seventy thousand, four hundred forty-three".