4381855 has 4 divisors (see below), whose sum is σ = 5258232. Its totient is φ = 3505480.

The previous prime is 4381847. The next prime is 4381859. The reversal of 4381855 is 5581834.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4381855 - 2³ = 4381847 is a prime.

It is a Duffinian number.

4381855 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4381855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4381859) 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 3 ways as a sum of consecutive naturals, for example, 438181 + ... + 438190.

It is an arithmetic number, because the mean of its divisors is an integer number (1314558).

Almost surely, 2^4381855 is an apocalyptic number.

4381855 is a deficient number, since it is larger than the sum of its proper divisors (876377).

4381855 is an equidigital number, since it uses as much as digits as its factorization.

4381855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876376.

The product of its digits is 19200, while the sum is 34.

The square root of 4381855 is about 2093.2880833751. The cubic root of 4381855 is about 163.6386924940.

The spelling of 4381855 in words is "four million, three hundred eighty-one thousand, eight hundred fifty-five".