3940216 has 32 divisors (see below), whose sum is σ = 8570880. Its totient is φ = 1663200.

The previous prime is 3940213. The next prime is 3940217. The reversal of 3940216 is 6120493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3940213) 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 7 ways as a sum of consecutive naturals, for example, 3481 + ... + 4471.

It is an arithmetic number, because the mean of its divisors is an integer number (267840).

Almost surely, 2^3940216 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 3940216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4285440).

3940216 is an abundant number, since it is smaller than the sum of its proper divisors (4630664).

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

3940216 is a wasteful number, since it uses less digits than its factorization.

3940216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075 (or 1071 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 3940216 is about 1984.9977329962. The cubic root of 3940216 is about 157.9452889673.

The spelling of 3940216 in words is "three million, nine hundred forty thousand, two hundred sixteen".