3839640 has 96 divisors (see below), whose sum is σ = 13420080. Its totient is φ = 876288.

The previous prime is 3839639. The next prime is 3839651. The reversal of 3839640 is 469383.

3839640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 5554 + ... + 6206.

Almost surely, 2^3839640 is an apocalyptic number.

3839640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a pronic number, being equal to 1959×1960.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3839640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6710040).

3839640 is an abundant number, since it is smaller than the sum of its proper divisors (9580440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3839640 is a wasteful number, since it uses less digits than its factorization.

3839640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 670 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 3839640 is about 1959.4999362082. The cubic root of 3839640 is about 156.5898119093.

The spelling of 3839640 in words is "three million, eight hundred thirty-nine thousand, six hundred forty".