3963856 has 80 divisors (see below), whose sum is σ = 9374400. Its totient is φ = 1603584.

The previous prime is 3963853. The next prime is 3963857. The reversal of 3963856 is 6583693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3963853) 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 15 ways as a sum of consecutive naturals, for example, 67155 + ... + 67213.

It is an arithmetic number, because the mean of its divisors is an integer number (117180).

Almost surely, 2^3963856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3963856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4687200).

3963856 is an abundant number, since it is smaller than the sum of its proper divisors (5410544).

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

3963856 is a wasteful number, since it uses less digits than its factorization.

3963856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 110 counting only the distinct ones).

The product of its digits is 116640, while the sum is 40.

The square root of 3963856 is about 1990.9434949290. The cubic root of 3963856 is about 158.2605326137.

The spelling of 3963856 in words is "three million, nine hundred sixty-three thousand, eight hundred fifty-six".