3868986 has 48 divisors (see below), whose sum is σ = 8865504. Its totient is φ = 1116000.

The previous prime is 3868981. The next prime is 3868987. The reversal of 3868986 is 6898683.

3868986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Its product of digits (497664) is a multiple of the sum of its prime divisors (108).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3868981) 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 23 ways as a sum of consecutive naturals, for example, 63396 + ... + 63456.

It is an arithmetic number, because the mean of its divisors is an integer number (184698).

Almost surely, 2^3868986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3868986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4432752).

3868986 is an abundant number, since it is smaller than the sum of its proper divisors (4996518).

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

3868986 is a wasteful number, since it uses less digits than its factorization.

3868986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 108 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 3868986 is about 1966.9738178227. The cubic root of 3868986 is about 156.9877335001.

The spelling of 3868986 in words is "three million, eight hundred sixty-eight thousand, nine hundred eighty-six".