3855866 has 8 divisors (see below), whose sum is σ = 6610080. Its totient is φ = 1652508.

The previous prime is 3855857. The next prime is 3855913. The reversal of 3855866 is 6685583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137696 + ... + 137723.

It is an arithmetic number, because the mean of its divisors is an integer number (826260).

Almost surely, 2^3855866 is an apocalyptic number.

3855866 is a deficient number, since it is larger than the sum of its proper divisors (2754214).

3855866 is a wasteful number, since it uses less digits than its factorization.

3855866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275428.

The product of its digits is 172800, while the sum is 41.

The square root of 3855866 is about 1963.6359132996. The cubic root of 3855866 is about 156.8100804379.

The spelling of 3855866 in words is "three million, eight hundred fifty-five thousand, eight hundred sixty-six".