8447280873 has 8 divisors (see below), whose sum is σ = 11431146528. Its totient is φ = 5547467904.

The previous prime is 8447280871. The next prime is 8447280883. The reversal of 8447280873 is 3780827448.

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

It is not a de Polignac number, because 8447280873 - 2¹ = 8447280871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8447280871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21012936 + ... + 21013337.

It is an arithmetic number, because the mean of its divisors is an integer number (1428893316).

Almost surely, 2^8447280873 is an apocalyptic number.

It is an amenable number.

8447280873 is a deficient number, since it is larger than the sum of its proper divisors (2983865655).

8447280873 is a wasteful number, since it uses less digits than its factorization.

8447280873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42026343.

The product of its (nonzero) digits is 2408448, while the sum is 51.

The square root of 8447280873 is about 91909.0902631508. The cubic root of 8447280873 is about 2036.5995567950.

The spelling of 8447280873 in words is "eight billion, four hundred forty-seven million, two hundred eighty thousand, eight hundred seventy-three".