8747344321 has 4 divisors (see below), whose sum is σ = 8752500612. Its totient is φ = 8742188032.

The previous prime is 8747344303. The next prime is 8747344357. The reversal of 8747344321 is 1234437478.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1234437478 = 2 ⋅617218739.

It can be written as a sum of positive squares in 2 ways, for example, as 6567481600 + 2179862721 = 81040^2 + 46689^2 .

It is a cyclic number.

It is not a de Polignac number, because 8747344321 - 2¹⁵ = 8747311553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8747344391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2575600 + ... + 2578993.

It is an arithmetic number, because the mean of its divisors is an integer number (2188125153).

Almost surely, 2^8747344321 is an apocalyptic number.

It is an amenable number.

8747344321 is a deficient number, since it is larger than the sum of its proper divisors (5156291).

8747344321 is a wasteful number, since it uses less digits than its factorization.

8747344321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5156290.

The product of its digits is 451584, while the sum is 43.

The square root of 8747344321 is about 93527.2383907490. The cubic root of 8747344321 is about 2060.4341562227.

The spelling of 8747344321 in words is "eight billion, seven hundred forty-seven million, three hundred forty-four thousand, three hundred twenty-one".