3886389 has 24 divisors (see below), whose sum is σ = 6158880. Its totient is φ = 2346912.

The previous prime is 3886361. The next prime is 3886391. The reversal of 3886389 is 9836883.

3886389 is a `hidden beast` number, since 3 + 8 + 8 + 638 + 9 = 666.

It is not a de Polignac number, because 3886389 - 2⁵ = 3886357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3886339) 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 23 ways as a sum of consecutive naturals, for example, 6622 + ... + 7184.

It is an arithmetic number, because the mean of its divisors is an integer number (256620).

Almost surely, 2^3886389 is an apocalyptic number.

3886389 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

3886389 is a deficient number, since it is larger than the sum of its proper divisors (2272491).

3886389 is a wasteful number, since it uses less digits than its factorization.

3886389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 638 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 3886389 is about 1971.3926549523. The cubic root of 3886389 is about 157.2227624712. Note that the first 3 decimals are identical.

The spelling of 3886389 in words is "three million, eight hundred eighty-six thousand, three hundred eighty-nine".