3871407 has 4 divisors (see below), whose sum is σ = 5161880. Its totient is φ = 2580936.

The previous prime is 3871397. The next prime is 3871423. The reversal of 3871407 is 7041783.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3871407 - 2⁴ = 3871391 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3871447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645232 + ... + 645237.

It is an arithmetic number, because the mean of its divisors is an integer number (1290470).

Almost surely, 2^3871407 is an apocalyptic number.

3871407 is a deficient number, since it is larger than the sum of its proper divisors (1290473).

3871407 is a wasteful number, since it uses less digits than its factorization.

3871407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290472.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 3871407 is about 1967.5891339403. The cubic root of 3871407 is about 157.0204714539.

It can be divided in two parts, 3871 and 407, that added together give a triangular number (4278 = T₉₂).

The spelling of 3871407 in words is "three million, eight hundred seventy-one thousand, four hundred seven".