3971941 has 4 divisors (see below), whose sum is σ = 3988800. Its totient is φ = 3955084.

The previous prime is 3971917. The next prime is 3971963. The reversal of 3971941 is 1491793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1491793 = 137 ⋅10889.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3971941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3971897 and 3971906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971911) 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 3 ways as a sum of consecutive naturals, for example, 8071 + ... + 8548.

It is an arithmetic number, because the mean of its divisors is an integer number (997200).

Almost surely, 2^3971941 is an apocalyptic number.

It is an amenable number.

3971941 is a deficient number, since it is larger than the sum of its proper divisors (16859).

3971941 is a wasteful number, since it uses less digits than its factorization.

3971941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16858.

The product of its digits is 6804, while the sum is 34.

The square root of 3971941 is about 1992.9729049839. The cubic root of 3971941 is about 158.3680598500.

The spelling of 3971941 in words is "three million, nine hundred seventy-one thousand, nine hundred forty-one".