849841 has 4 divisors (see below), whose sum is σ = 855412. Its totient is φ = 844272.

The previous prime is 849839. The next prime is 849857. The reversal of 849841 is 148948.

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

It can be written as a sum of positive squares in 2 ways, for example, as 216225 + 633616 = 465^2 + 796^2 .

It is a cyclic number.

It is not a de Polignac number, because 849841 - 2¹ = 849839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 849797 and 849806.

It is not an unprimeable number, because it can be changed into a prime (849241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2550 + ... + 2863.

It is an arithmetic number, because the mean of its divisors is an integer number (213853).

2⁸⁴⁹⁸⁴¹ is an apocalyptic number.

It is an amenable number.

849841 is a deficient number, since it is larger than the sum of its proper divisors (5571).

849841 is a wasteful number, since it uses less digits than its factorization.

849841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5570.

The product of its digits is 9216, while the sum is 34.

The square root of 849841 is about 921.8682118394. The cubic root of 849841 is about 94.7209168542.

The spelling of 849841 in words is "eight hundred forty-nine thousand, eight hundred forty-one".