8447280874 has 36 divisors (see below), whose sum is σ = 13192217766. Its totient is φ = 4055286144.

The previous prime is 8447280871. The next prime is 8447280883. The reversal of 8447280874 is 4780827448.

It can be written as a sum of positive squares in 3 ways, for example, as 3014559025 + 5432721849 = 54905^2 + 73707^2 .

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

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 17 ways as a sum of consecutive naturals, for example, 74754642 + ... + 74754754.

Almost surely, 2^8447280874 is an apocalyptic number.

8447280874 is a deficient number, since it is larger than the sum of its proper divisors (4744936892).

8447280874 is an equidigital number, since it uses as much as digits as its factorization.

8447280874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 3211264, while the sum is 52.

The square root of 8447280874 is about 91909.0902685910. The cubic root of 8447280874 is about 2036.5995568753.

The spelling of 8447280874 in words is "eight billion, four hundred forty-seven million, two hundred eighty thousand, eight hundred seventy-four".