8117129099 has 8 divisors (see below), whose sum is σ = 8545245840. Its totient is φ = 7689102336.

The previous prime is 8117129039. The next prime is 8117129101. The reversal of 8117129099 is 9909217118.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8117129099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8117129039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243359 + ... + 274695.

It is an arithmetic number, because the mean of its divisors is an integer number (1068155730).

Almost surely, 2^8117129099 is an apocalyptic number.

8117129099 is a deficient number, since it is larger than the sum of its proper divisors (428116741).

8117129099 is a wasteful number, since it uses less digits than its factorization.

8117129099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44989.

The product of its (nonzero) digits is 81648, while the sum is 47.

The square root of 8117129099 is about 90095.1114045596. Note that the first 3 decimals coincide. The cubic root of 8117129099 is about 2009.7135057785.

The spelling of 8117129099 in words is "eight billion, one hundred seventeen million, one hundred twenty-nine thousand, ninety-nine".