8709984605 has 16 divisors (see below), whose sum is σ = 11951733504. Its totient is φ = 5969255040.

The previous prime is 8709984601. The next prime is 8709984607. The reversal of 8709984605 is 5064899078.

8709984605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8709984605 - 2² = 8709984601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8709984601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3872 + ... + 132041.

It is an arithmetic number, because the mean of its divisors is an integer number (746983344).

Almost surely, 2^8709984605 is an apocalyptic number.

It is an amenable number.

8709984605 is a deficient number, since it is larger than the sum of its proper divisors (3241748899).

8709984605 is a wasteful number, since it uses less digits than its factorization.

8709984605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137756.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The square root of 8709984605 is about 93327.2982840498. The cubic root of 8709984605 is about 2057.4966138015.

The spelling of 8709984605 in words is "eight billion, seven hundred nine million, nine hundred eighty-four thousand, six hundred five".