8520043347 has 16 divisors (see below), whose sum is σ = 12686366880. Its totient is φ = 5651192736.

The previous prime is 8520043303. The next prime is 8520043453. The reversal of 8520043347 is 7433400258.

It is a happy number.

It is not a de Polignac number, because 8520043347 - 2⁷ = 8520043219 is a prime.

It is a super-2 number, since 2×8520043347² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8520043547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 795588 + ... + 806225.

It is an arithmetic number, because the mean of its divisors is an integer number (792897930).

Almost surely, 2^8520043347 is an apocalyptic number.

8520043347 is a deficient number, since it is larger than the sum of its proper divisors (4166323533).

8520043347 is a wasteful number, since it uses less digits than its factorization.

8520043347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602019 (or 1602013 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 8520043347 is about 92304.0808794497. The cubic root of 8520043347 is about 2042.4304099754.

The spelling of 8520043347 in words is "eight billion, five hundred twenty million, forty-three thousand, three hundred forty-seven".