8779847147 has 2 divisors, whose sum is σ = 8779847148. Its totient is φ = 8779847146.

The previous prime is 8779847119. The next prime is 8779847191. The reversal of 8779847147 is 7417489778.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8779847147 - 2²⁰ = 8778798571 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8779847147.

It is not a weakly prime, because it can be changed into another prime (8779817147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4389923573 + 4389923574.

It is an arithmetic number, because the mean of its divisors is an integer number (4389923574).

Almost surely, 2^8779847147 is an apocalyptic number.

8779847147 is a deficient number, since it is larger than the sum of its proper divisors (1).

8779847147 is an equidigital number, since it uses as much as digits as its factorization.

8779847147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22127616, while the sum is 62.

The square root of 8779847147 is about 93700.8385608155. The cubic root of 8779847147 is about 2062.9830119544.

The spelling of 8779847147 in words is "eight billion, seven hundred seventy-nine million, eight hundred forty-seven thousand, one hundred forty-seven".