3943660 has 48 divisors (see below), whose sum is σ = 10027584. Its totient is φ = 1271808.

The previous prime is 3943651. The next prime is 3943661. The reversal of 3943660 is 663493.

3943660 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

3943660 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3943661) 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, 1552 + ... + 3208.

It is an arithmetic number, because the mean of its divisors is an integer number (208908).

Almost surely, 2^3943660 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 3943660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5013792).

3943660 is an abundant number, since it is smaller than the sum of its proper divisors (6083924).

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

3943660 is a wasteful number, since it uses less digits than its factorization.

3943660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690 (or 1688 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 3943660 is about 1985.8650508028. The cubic root of 3943660 is about 157.9912936505.

The spelling of 3943660 in words is "three million, nine hundred forty-three thousand, six hundred sixty".