8487839 has 4 divisors (see below), whose sum is σ = 8595360. Its totient is φ = 8380320.

The previous prime is 8487827. The next prime is 8487859. The reversal of 8487839 is 9387848.

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

It is not a de Polignac number, because 8487839 - 2⁴ = 8487823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8487793 and 8487802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8487859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53642 + ... + 53799.

It is an arithmetic number, because the mean of its divisors is an integer number (2148840).

Almost surely, 2^8487839 is an apocalyptic number.

8487839 is a deficient number, since it is larger than the sum of its proper divisors (107521).

8487839 is a wasteful number, since it uses less digits than its factorization.

8487839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107520.

The product of its digits is 387072, while the sum is 47.

The square root of 8487839 is about 2913.3896066266. The cubic root of 8487839 is about 203.9853811772.

Subtracting 8487839 from its reverse (9387848), we obtain a palindrome (900009).

The spelling of 8487839 in words is "eight million, four hundred eighty-seven thousand, eight hundred thirty-nine".