8479477847 has 2 divisors, whose sum is σ = 8479477848. Its totient is φ = 8479477846.

The previous prime is 8479477819. The next prime is 8479477913. The reversal of 8479477847 is 7487749748.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8479477847 - 2¹⁰ = 8479476823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8479470847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4239738923 + 4239738924.

It is an arithmetic number, because the mean of its divisors is an integer number (4239738924).

Almost surely, 2^8479477847 is an apocalyptic number.

8479477847 is a deficient number, since it is larger than the sum of its proper divisors (1).

8479477847 is an equidigital number, since it uses as much as digits as its factorization.

8479477847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88510464, while the sum is 65.

The square root of 8479477847 is about 92084.0803125057. The cubic root of 8479477847 is about 2039.1837891195.

The spelling of 8479477847 in words is "eight billion, four hundred seventy-nine million, four hundred seventy-seven thousand, eight hundred forty-seven".