3865854 has 16 divisors (see below), whose sum is σ = 8138880. Its totient is φ = 1220760.

The previous prime is 3865853. The next prime is 3865859. The reversal of 3865854 is 4585683.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3865853) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16842 + ... + 17069.

It is an arithmetic number, because the mean of its divisors is an integer number (508680).

Almost surely, 2^3865854 is an apocalyptic number.

3865854 is an abundant number, since it is smaller than the sum of its proper divisors (4273026).

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

3865854 is a wasteful number, since it uses less digits than its factorization.

3865854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33935.

The product of its digits is 115200, while the sum is 39.

The square root of 3865854 is about 1966.1775097890. The cubic root of 3865854 is about 156.9453607857.

The spelling of 3865854 in words is "three million, eight hundred sixty-five thousand, eight hundred fifty-four".