8477847847 has 12 divisors (see below), whose sum is σ = 9898663320. Its totient is φ = 7239701616.

The previous prime is 8477847809. The next prime is 8477847887. The reversal of 8477847847 is 7487487748.

It is not a de Polignac number, because 8477847847 - 2¹¹ = 8477845799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8477847887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308413 + ... + 334774.

It is an arithmetic number, because the mean of its divisors is an integer number (824888610).

Almost surely, 2^8477847847 is an apocalyptic number.

8477847847 is a deficient number, since it is larger than the sum of its proper divisors (1420815473).

8477847847 is a wasteful number, since it uses less digits than its factorization.

8477847847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643470 (or 643463 counting only the distinct ones).

The product of its digits is 78675968, while the sum is 64.

The square root of 8477847847 is about 92075.2292801924. The cubic root of 8477847847 is about 2039.0531174500.

The spelling of 8477847847 in words is "eight billion, four hundred seventy-seven million, eight hundred forty-seven thousand, eight hundred forty-seven".