3865086 has 36 divisors (see below), whose sum is σ = 8907912. Its totient is φ = 1210944.

The previous prime is 3865079. The next prime is 3865093. The reversal of 3865086 is 6805683.

It is an interprime number because it is at equal distance from previous prime (3865079) and next prime (3865093).

It is a self number, because there is not a number n which added to its sum of digits gives 3865086.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4831 + ... + 5573.

It is an arithmetic number, because the mean of its divisors is an integer number (247442).

Almost surely, 2^3865086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3865086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4453956).

3865086 is an abundant number, since it is smaller than the sum of its proper divisors (5042826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3865086 is a wasteful number, since it uses less digits than its factorization.

3865086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 3865086 is about 1965.9821972744. The cubic root of 3865086 is about 156.9349670478.

The spelling of 3865086 in words is "three million, eight hundred sixty-five thousand, eighty-six".