8499939 has 16 divisors (see below), whose sum is σ = 13254912. Its totient is φ = 4743648.

The previous prime is 8499937. The next prime is 8499971. The reversal of 8499939 is 9399948.

It is not a de Polignac number, because 8499939 - 2¹ = 8499937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8499891 and 8499900.

It is not an unprimeable number, because it can be changed into a prime (8499937) 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 15 ways as a sum of consecutive naturals, for example, 3804 + ... + 5609.

It is an arithmetic number, because the mean of its divisors is an integer number (828432).

Almost surely, 2^8499939 is an apocalyptic number.

8499939 is a deficient number, since it is larger than the sum of its proper divisors (4754973).

8499939 is a wasteful number, since it uses less digits than its factorization.

8499939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9466.

The product of its digits is 629856, while the sum is 51.

The square root of 8499939 is about 2915.4654859902. The cubic root of 8499939 is about 204.0822668967.

Subtracting 8499939 from its reverse (9399948), we obtain a palindrome (900009).

The spelling of 8499939 in words is "eight million, four hundred ninety-nine thousand, nine hundred thirty-nine".