806839 has 8 divisors (see below), whose sum is σ = 902160. Its totient is φ = 715200.

The previous prime is 806821. The next prime is 806857. The reversal of 806839 is 938608.

It is an interprime number because it is at equal distance from previous prime (806821) and next prime (806857).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 806839 - 2⁵ = 806807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806639) 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 7 ways as a sum of consecutive naturals, for example, 444 + ... + 1345.

It is an arithmetic number, because the mean of its divisors is an integer number (112770).

2⁸⁰⁶⁸³⁹ is an apocalyptic number.

806839 is a deficient number, since it is larger than the sum of its proper divisors (95321).

806839 is a wasteful number, since it uses less digits than its factorization.

806839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 806839 is about 898.2421722453. The cubic root of 806839 is about 93.0955583100.

Subtracting 806839 from its reverse (938608), we obtain a square (131769 = 363²).

The spelling of 806839 in words is "eight hundred six thousand, eight hundred thirty-nine".