8749520317 has 4 divisors (see below), whose sum is σ = 8914605660. Its totient is φ = 8584434976.

The previous prime is 8749520303. The next prime is 8749520333. The reversal of 8749520317 is 7130259478.

8749520317 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7130259478 = 2 ⋅3565129739.

It can be written as a sum of positive squares in 2 ways, for example, as 6694348761 + 2055171556 = 81819^2 + 45334^2 .

It is a cyclic number.

It is not a de Polignac number, because 8749520317 - 2¹¹ = 8749518269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8749527317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82542592 + ... + 82542697.

It is an arithmetic number, because the mean of its divisors is an integer number (2228651415).

Almost surely, 2^8749520317 is an apocalyptic number.

It is an amenable number.

8749520317 is a deficient number, since it is larger than the sum of its proper divisors (165085343).

8749520317 is a wasteful number, since it uses less digits than its factorization.

8749520317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165085342.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 8749520317 is about 93538.8706207211. The cubic root of 8749520317 is about 2060.6049937781.

The spelling of 8749520317 in words is "eight billion, seven hundred forty-nine million, five hundred twenty thousand, three hundred seventeen".