3881855 has 8 divisors (see below), whose sum is σ = 4784352. Its totient is φ = 3021408.

The previous prime is 3881849. The next prime is 3881863. The reversal of 3881855 is 5581883.

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

It is a cyclic number.

It is not a de Polignac number, because 3881855 - 2¹⁸ = 3619711 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 10307 + ... + 10676.

It is an arithmetic number, because the mean of its divisors is an integer number (598044).

Almost surely, 2^3881855 is an apocalyptic number.

3881855 is a deficient number, since it is larger than the sum of its proper divisors (902497).

3881855 is a wasteful number, since it uses less digits than its factorization.

3881855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21025.

The product of its digits is 38400, while the sum is 38.

The square root of 3881855 is about 1970.2423708772. The cubic root of 3881855 is about 157.1615981190.

The spelling of 3881855 in words is "three million, eight hundred eighty-one thousand, eight hundred fifty-five".