8871539 has 4 divisors (see below), whose sum is σ = 9087960. Its totient is φ = 8655120.

The previous prime is 8871509. The next prime is 8871547. The reversal of 8871539 is 9351788.

It is a happy number.

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 8871539 - 2²⁰ = 7822963 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 216379 = 8871539 / (8 + 8 + 7 + 1 + 5 + 3 + 9).

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8871496 and 8871505.

It is not an unprimeable number, because it can be changed into a prime (8871509) 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, 108149 + ... + 108230.

It is an arithmetic number, because the mean of its divisors is an integer number (2271990).

Almost surely, 2^8871539 is an apocalyptic number.

8871539 is a deficient number, since it is larger than the sum of its proper divisors (216421).

8871539 is a wasteful number, since it uses less digits than its factorization.

8871539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216420.

The product of its digits is 60480, while the sum is 41.

The square root of 8871539 is about 2978.5128839741. The cubic root of 8871539 is about 207.0139706006.

Subtracting 8871539 from its reverse (9351788), we obtain a square (480249 = 693²).

The spelling of 8871539 in words is "eight million, eight hundred seventy-one thousand, five hundred thirty-nine".