8280815947 has 2 divisors, whose sum is σ = 8280815948. Its totient is φ = 8280815946.

The previous prime is 8280815927. The next prime is 8280816013. The reversal of 8280815947 is 7495180828.

It is a happy number.

8280815947 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8280815947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8280815894 and 8280815903.

It is not a weakly prime, because it can be changed into another prime (8280815927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4140407973 + 4140407974.

It is an arithmetic number, because the mean of its divisors is an integer number (4140407974).

Almost surely, 2^8280815947 is an apocalyptic number.

8280815947 is a deficient number, since it is larger than the sum of its proper divisors (1).

8280815947 is an equidigital number, since it uses as much as digits as its factorization.

8280815947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1290240, while the sum is 52.

The square root of 8280815947 is about 90998.9887141610. The cubic root of 8280815947 is about 2023.1327356157.

The spelling of 8280815947 in words is "eight billion, two hundred eighty million, eight hundred fifteen thousand, nine hundred forty-seven".