3888621 has 16 divisors (see below), whose sum is σ = 6285120. Its totient is φ = 2356560.

The previous prime is 3888611. The next prime is 3888629. The reversal of 3888621 is 1268883.

It is not a de Polignac number, because 3888621 - 2¹¹ = 3886573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3888629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6250 + ... + 6843.

It is an arithmetic number, because the mean of its divisors is an integer number (392820).

Almost surely, 2^3888621 is an apocalyptic number.

It is an amenable number.

3888621 is a deficient number, since it is larger than the sum of its proper divisors (2396499).

3888621 is a wasteful number, since it uses less digits than its factorization.

3888621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13113 (or 13107 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 3888621 is about 1971.9586709665. The cubic root of 3888621 is about 157.2528550196.

It can be divided in two parts, 388 and 8621, that added together give a palindrome (9009).

The spelling of 3888621 in words is "three million, eight hundred eighty-eight thousand, six hundred twenty-one".