8947565855 has 4 divisors (see below), whose sum is σ = 10737079032. Its totient is φ = 7158052680.

The previous prime is 8947565849. The next prime is 8947565863. The reversal of 8947565855 is 5585657498.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5585657498 = 2 ⋅2792828749.

It is not a de Polignac number, because 8947565855 - 2⁴ = 8947565839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 894756581 + ... + 894756590.

It is an arithmetic number, because the mean of its divisors is an integer number (2684269758).

Almost surely, 2^8947565855 is an apocalyptic number.

8947565855 is a deficient number, since it is larger than the sum of its proper divisors (1789513177).

8947565855 is a wasteful number, since it uses less digits than its factorization.

8947565855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1789513176.

The product of its digits is 60480000, while the sum is 62.

The square root of 8947565855 is about 94591.5739112105. The cubic root of 8947565855 is about 2076.0364188100.

The spelling of 8947565855 in words is "eight billion, nine hundred forty-seven million, five hundred sixty-five thousand, eight hundred fifty-five".