3859685 has 4 divisors (see below), whose sum is σ = 4631628. Its totient is φ = 3087744.

The previous prime is 3859673. The next prime is 3859693. The reversal of 3859685 is 5869583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5869583 = 223 ⋅26321.

It can be written as a sum of positive squares in 2 ways, for example, as 1094116 + 2765569 = 1046^2 + 1663^2 .

It is a cyclic number.

It is not a de Polignac number, because 3859685 - 2⁶ = 3859621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 385964 + ... + 385973.

It is an arithmetic number, because the mean of its divisors is an integer number (1157907).

Almost surely, 2^3859685 is an apocalyptic number.

It is an amenable number.

3859685 is a deficient number, since it is larger than the sum of its proper divisors (771943).

3859685 is an equidigital number, since it uses as much as digits as its factorization.

3859685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771942.

The product of its digits is 259200, while the sum is 44.

The square root of 3859685 is about 1964.6081034140. The cubic root of 3859685 is about 156.8618336278.

The spelling of 3859685 in words is "three million, eight hundred fifty-nine thousand, six hundred eighty-five".