3686839 has 8 divisors (see below), whose sum is σ = 4046112. Its totient is φ = 3338400.

The previous prime is 3686833. The next prime is 3686849. The reversal of 3686839 is 9386863.

3686839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3686839 - 2⁹ = 3686327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3686795 and 3686804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3686833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1987 + ... + 3364.

It is an arithmetic number, because the mean of its divisors is an integer number (505764).

Almost surely, 2^3686839 is an apocalyptic number.

3686839 is a deficient number, since it is larger than the sum of its proper divisors (359273).

3686839 is a wasteful number, since it uses less digits than its factorization.

3686839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5417.

The product of its digits is 186624, while the sum is 43.

The square root of 3686839 is about 1920.1143195133. The cubic root of 3686839 is about 154.4844333803.

The spelling of 3686839 in words is "three million, six hundred eighty-six thousand, eight hundred thirty-nine".