8109503999 has 16 divisors (see below), whose sum is σ = 8699291136. Its totient is φ = 7532784000.

The previous prime is 8109503957. The next prime is 8109504023. The reversal of 8109503999 is 9993059018.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8109503999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8109503999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8109503929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484724 + ... + 501174.

It is an arithmetic number, because the mean of its divisors is an integer number (543705696).

Almost surely, 2^8109503999 is an apocalyptic number.

8109503999 is a deficient number, since it is larger than the sum of its proper divisors (589787137).

8109503999 is a wasteful number, since it uses less digits than its factorization.

8109503999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16846.

The product of its (nonzero) digits is 787320, while the sum is 53.

The square root of 8109503999 is about 90052.7845155273. The cubic root of 8109503999 is about 2009.0840111535.

The spelling of 8109503999 in words is "eight billion, one hundred nine million, five hundred three thousand, nine hundred ninety-nine".