199389041 has 4 divisors (see below), whose sum is σ = 204777972. Its totient is φ = 194000112.

The previous prime is 199389023. The next prime is 199389067. The reversal of 199389041 is 140983991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 140983991 = 193 ⋅730487.

It can be written as a sum of positive squares in 2 ways, for example, as 179452816 + 19936225 = 13396^2 + 4465^2 .

It is a cyclic number.

It is not a de Polignac number, because 199389041 - 2⁶ = 199388977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 199388983 and 199389001.

It is not an unprimeable number, because it can be changed into a prime (199389011) 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, 2694410 + ... + 2694483.

It is an arithmetic number, because the mean of its divisors is an integer number (51194493).

Almost surely, 2^199389041 is an apocalyptic number.

It is an amenable number.

199389041 is a deficient number, since it is larger than the sum of its proper divisors (5388931).

199389041 is an equidigital number, since it uses as much as digits as its factorization.

199389041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5388930.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 199389041 is about 14120.5184394908. The cubic root of 199389041 is about 584.2074552655.

The spelling of 199389041 in words is "one hundred ninety-nine million, three hundred eighty-nine thousand, forty-one".