6809843 has 4 divisors (see below), whose sum is σ = 7210440. Its totient is φ = 6409248.

The previous prime is 6809837. The next prime is 6809849. The reversal of 6809843 is 3489086.

6809843 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3489086 = 2 ⋅1744543.

It is an interprime number because it is at equal distance from previous prime (6809837) and next prime (6809849).

It is a cyclic number.

It is not a de Polignac number, because 6809843 - 2⁶ = 6809779 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6809797 and 6809806.

It is not an unprimeable number, because it can be changed into a prime (6809849) 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, 200273 + ... + 200306.

It is an arithmetic number, because the mean of its divisors is an integer number (1802610).

Almost surely, 2^6809843 is an apocalyptic number.

6809843 is a deficient number, since it is larger than the sum of its proper divisors (400597).

6809843 is a wasteful number, since it uses less digits than its factorization.

6809843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400596.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 6809843 is about 2609.5675887012. The cubic root of 6809843 is about 189.5450147515.

The spelling of 6809843 in words is "six million, eight hundred nine thousand, eight hundred forty-three".