871387 has 8 divisors (see below), whose sum is σ = 976752. Its totient is φ = 770400.

The previous prime is 871349. The next prime is 871393. The reversal of 871387 is 783178.

It is a happy number.

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 871387 - 2⁷ = 871259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (871337) 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 7 ways as a sum of consecutive naturals, for example, 664 + ... + 1477.

It is an arithmetic number, because the mean of its divisors is an integer number (122094).

2⁸⁷¹³⁸⁷ is an apocalyptic number.

871387 is a deficient number, since it is larger than the sum of its proper divisors (105365).

871387 is a wasteful number, since it uses less digits than its factorization.

871387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189.

The product of its digits is 9408, while the sum is 34.

The square root of 871387 is about 933.4811192520. The cubic root of 871387 is about 95.5147314245.

Subtracting from 871387 its reverse (783178), we obtain a square (88209 = 297²).

The spelling of 871387 in words is "eight hundred seventy-one thousand, three hundred eighty-seven".