3873889 has 4 divisors (see below), whose sum is σ = 3913924. Its totient is φ = 3833856.

The previous prime is 3873871. The next prime is 3873893. The reversal of 3873889 is 9883783.

3873889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2585664 + 1288225 = 1608^2 + 1135^2 .

It is a cyclic number.

It is not a de Polignac number, because 3873889 - 2¹¹ = 3871841 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 19872 + ... + 20065.

It is an arithmetic number, because the mean of its divisors is an integer number (978481).

Almost surely, 2^3873889 is an apocalyptic number.

It is an amenable number.

3873889 is a deficient number, since it is larger than the sum of its proper divisors (40035).

3873889 is an equidigital number, since it uses as much as digits as its factorization.

3873889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40034.

The product of its digits is 290304, while the sum is 46.

The square root of 3873889 is about 1968.2197539909. The cubic root of 3873889 is about 157.0540201142.

The spelling of 3873889 in words is "three million, eight hundred seventy-three thousand, eight hundred eighty-nine".