3981271 has 8 divisors (see below), whose sum is σ = 4571424. Its totient is φ = 3396480.

The previous prime is 3981253. The next prime is 3981301. The reversal of 3981271 is 1721893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3981271 - 2¹⁷ = 3850199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3981071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411 + ... + 2851.

It is an arithmetic number, because the mean of its divisors is an integer number (571428).

Almost surely, 2^3981271 is an apocalyptic number.

3981271 is a deficient number, since it is larger than the sum of its proper divisors (590153).

3981271 is a wasteful number, since it uses less digits than its factorization.

3981271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2681.

The product of its digits is 3024, while the sum is 31.

The square root of 3981271 is about 1995.3122562647. The cubic root of 3981271 is about 158.4919638872.

The spelling of 3981271 in words is "three million, nine hundred eighty-one thousand, two hundred seventy-one".