3873805 has 16 divisors (see below), whose sum is σ = 5093424. Its totient is φ = 2810880.

The previous prime is 3873799. The next prime is 3873809. The reversal of 3873805 is 5083783.

3873805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 346921 + 3526884 = 589^2 + 1878^2 .

It is not a de Polignac number, because 3873805 - 2⁷ = 3873677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3873809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3477 + ... + 4453.

It is an arithmetic number, because the mean of its divisors is an integer number (318339).

Almost surely, 2^3873805 is an apocalyptic number.

It is an amenable number.

3873805 is a deficient number, since it is larger than the sum of its proper divisors (1219619).

3873805 is a wasteful number, since it uses less digits than its factorization.

3873805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 3873805 is about 1968.1984147946. The cubic root of 3873805 is about 157.0528849386.

The spelling of 3873805 in words is "three million, eight hundred seventy-three thousand, eight hundred five".