3871487 has 4 divisors (see below), whose sum is σ = 3935016. Its totient is φ = 3807960.

The previous prime is 3871481. The next prime is 3871499. The reversal of 3871487 is 7841783.

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

It is a cyclic number.

It is not a de Polignac number, because 3871487 - 2⁶ = 3871423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3871487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3871481) 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, 31673 + ... + 31794.

It is an arithmetic number, because the mean of its divisors is an integer number (983754).

Almost surely, 2^3871487 is an apocalyptic number.

3871487 is a deficient number, since it is larger than the sum of its proper divisors (63529).

3871487 is an equidigital number, since it uses as much as digits as its factorization.

3871487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63528.

The product of its digits is 37632, while the sum is 38.

The square root of 3871487 is about 1967.6094632828. The cubic root of 3871487 is about 157.0215530203.

The spelling of 3871487 in words is "three million, eight hundred seventy-one thousand, four hundred eighty-seven".