8717129979 has 8 divisors (see below), whose sum is σ = 11893138752. Its totient is φ = 5676270600.

The previous prime is 8717129977. The next prime is 8717129983. The reversal of 8717129979 is 9799217178.

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

It is not a de Polignac number, because 8717129979 - 2¹ = 8717129977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8717129977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33787197 + ... + 33787454.

It is an arithmetic number, because the mean of its divisors is an integer number (1486642344).

Almost surely, 2^8717129979 is an apocalyptic number.

8717129979 is a deficient number, since it is larger than the sum of its proper divisors (3176008773).

8717129979 is a wasteful number, since it uses less digits than its factorization.

8717129979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67574697.

The product of its digits is 4000752, while the sum is 60.

The square root of 8717129979 is about 93365.5717007078. The cubic root of 8717129979 is about 2058.0590933420.

The spelling of 8717129979 in words is "eight billion, seven hundred seventeen million, one hundred twenty-nine thousand, nine hundred seventy-nine".