3873971 has 4 divisors (see below), whose sum is σ = 3877944. Its totient is φ = 3870000.

The previous prime is 3873941. The next prime is 3873983. The reversal of 3873971 is 1793783.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1793783 = 131 ⋅13693.

It is a cyclic number.

It is not a de Polignac number, because 3873971 - 2¹⁸ = 3611827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3873901) 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, 596 + ... + 2846.

It is an arithmetic number, because the mean of its divisors is an integer number (969486).

Almost surely, 2^3873971 is an apocalyptic number.

3873971 is a deficient number, since it is larger than the sum of its proper divisors (3973).

3873971 is a wasteful number, since it uses less digits than its factorization.

3873971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3972.

The product of its digits is 31752, while the sum is 38.

The square root of 3873971 is about 1968.2405848879. The cubic root of 3873971 is about 157.0551282460.

The spelling of 3873971 in words is "three million, eight hundred seventy-three thousand, nine hundred seventy-one".