3999271 has 4 divisors (see below), whose sum is σ = 4003272. Its totient is φ = 3995272.

The previous prime is 3999251. The next prime is 3999283. The reversal of 3999271 is 1729993.

3999271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 1729993 = 349 ⋅4957.

It is a cyclic number.

It is not a de Polignac number, because 3999271 - 2⁵ = 3999239 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 (3999211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960 + ... + 2986.

It is an arithmetic number, because the mean of its divisors is an integer number (1000818).

Almost surely, 2^3999271 is an apocalyptic number.

3999271 is a deficient number, since it is larger than the sum of its proper divisors (4001).

3999271 is a wasteful number, since it uses less digits than its factorization.

3999271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4000.

The product of its digits is 30618, while the sum is 40.

The square root of 3999271 is about 1999.8177416955. The cubic root of 3999271 is about 158.7304611495.

The spelling of 3999271 in words is "three million, nine hundred ninety-nine thousand, two hundred seventy-one".