3947271 has 16 divisors (see below), whose sum is σ = 5537664. Its totient is φ = 2497824.

The previous prime is 3947233. The next prime is 3947297. The reversal of 3947271 is 1727493.

It is not a de Polignac number, because 3947271 - 2⁷ = 3947143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3947071) 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, 4360 + ... + 5186.

It is an arithmetic number, because the mean of its divisors is an integer number (346104).

Almost surely, 2^3947271 is an apocalyptic number.

3947271 is a deficient number, since it is larger than the sum of its proper divisors (1590393).

3947271 is a wasteful number, since it uses less digits than its factorization.

3947271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910.

The product of its digits is 10584, while the sum is 33.

The square root of 3947271 is about 1986.7740183524. The cubic root of 3947271 is about 158.0395003521.

The spelling of 3947271 in words is "three million, nine hundred forty-seven thousand, two hundred seventy-one".