199701443 has 4 divisors (see below), whose sum is σ = 199774200. Its totient is φ = 199628688.

The previous prime is 199701427. The next prime is 199701521. The reversal of 199701443 is 344107991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344107991 = 23 ⋅14961217.

It is a cyclic number.

It is not a de Polignac number, because 199701443 - 2⁴ = 199701427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 199701397 and 199701406.

It is not an unprimeable number, because it can be changed into a prime (199701413) 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 in 3 ways as a sum of consecutive naturals, for example, 32093 + ... + 37806.

It is an arithmetic number, because the mean of its divisors is an integer number (49943550).

Almost surely, 2^199701443 is an apocalyptic number.

199701443 is a deficient number, since it is larger than the sum of its proper divisors (72757).

199701443 is an equidigital number, since it uses as much as digits as its factorization.

199701443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72756.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 199701443 is about 14131.5760975200. The cubic root of 199701443 is about 584.5124074033.

The spelling of 199701443 in words is "one hundred ninety-nine million, seven hundred one thousand, four hundred forty-three".