3871293 has 4 divisors (see below), whose sum is σ = 5161728. Its totient is φ = 2580860.

The previous prime is 3871271. The next prime is 3871303. The reversal of 3871293 is 3921783.

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: 3921783 = 3 ⋅1307261.

It is a cyclic number.

It is not a de Polignac number, because 3871293 - 2²⁰ = 2822717 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3872293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645213 + ... + 645218.

It is an arithmetic number, because the mean of its divisors is an integer number (1290432).

Almost surely, 2^3871293 is an apocalyptic number.

It is an amenable number.

3871293 is a deficient number, since it is larger than the sum of its proper divisors (1290435).

3871293 is a wasteful number, since it uses less digits than its factorization.

3871293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290434.

The product of its digits is 9072, while the sum is 33.

The square root of 3871293 is about 1967.5601642644. The cubic root of 3871293 is about 157.0189301961.

The spelling of 3871293 in words is "three million, eight hundred seventy-one thousand, two hundred ninety-three".