3871387 has 8 divisors (see below), whose sum is σ = 4193504. Its totient is φ = 3552768.

The previous prime is 3871381. The next prime is 3871391. The reversal of 3871387 is 7831783.

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 3871387 - 2¹⁵ = 3838619 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3871381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1738 + ... + 3280.

It is an arithmetic number, because the mean of its divisors is an integer number (524188).

Almost surely, 2^3871387 is an apocalyptic number.

3871387 is a deficient number, since it is larger than the sum of its proper divisors (322117).

3871387 is a wasteful number, since it uses less digits than its factorization.

3871387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749.

The product of its digits is 28224, while the sum is 37.

The square root of 3871387 is about 1967.5840515719. The cubic root of 3871387 is about 157.0202010600.

The spelling of 3871387 in words is "three million, eight hundred seventy-one thousand, three hundred eighty-seven".