3937940 has 48 divisors (see below), whose sum is σ = 8944320. Its totient is φ = 1451520.

The previous prime is 3937919. The next prime is 3937943. The reversal of 3937940 is 497393.

It is a self number, because there is not a number n which added to its sum of digits gives 3937940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3937943) 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, 16220 + ... + 16460.

It is an arithmetic number, because the mean of its divisors is an integer number (186340).

Almost surely, 2^3937940 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 3937940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4472160).

3937940 is an abundant number, since it is smaller than the sum of its proper divisors (5006380).

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

3937940 is a wasteful number, since it uses less digits than its factorization.

3937940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 3937940 is about 1984.4243497801. The cubic root of 3937940 is about 157.9148716233.

The spelling of 3937940 in words is "three million, nine hundred thirty-seven thousand, nine hundred forty".