3865862 has 32 divisors (see below), whose sum is σ = 7789824. Its totient is φ = 1389600.

The previous prime is 3865859. The next prime is 3865867. The reversal of 3865862 is 2685683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3865867) 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 15 ways as a sum of consecutive naturals, for example, 1037 + ... + 2967.

It is an arithmetic number, because the mean of its divisors is an integer number (243432).

Almost surely, 2^3865862 is an apocalyptic number.

3865862 is an abundant number, since it is smaller than the sum of its proper divisors (3923962).

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

3865862 is a wasteful number, since it uses less digits than its factorization.

3865862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964.

The product of its digits is 69120, while the sum is 38.

The square root of 3865862 is about 1966.1795441922. The cubic root of 3865862 is about 156.9454690465.

The spelling of 3865862 in words is "three million, eight hundred sixty-five thousand, eight hundred sixty-two".