3868889 has 4 divisors (see below), whose sum is σ = 3892224. Its totient is φ = 3845556.

The previous prime is 3868849. The next prime is 3868897. The reversal of 3868889 is 9888683.

3868889 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3868889 - 2¹² = 3864793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3868849) 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, 11417 + ... + 11750.

It is an arithmetic number, because the mean of its divisors is an integer number (973056).

Almost surely, 2^3868889 is an apocalyptic number.

It is an amenable number.

3868889 is a deficient number, since it is larger than the sum of its proper divisors (23335).

3868889 is a wasteful number, since it uses less digits than its factorization.

3868889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23334.

The product of its digits is 663552, while the sum is 50.

The square root of 3868889 is about 1966.9491605021. The cubic root of 3868889 is about 156.9864215338.

The spelling of 3868889 in words is "three million, eight hundred sixty-eight thousand, eight hundred eighty-nine".