8663886399 has 64 divisors (see below), whose sum is σ = 14706524160. Its totient is φ = 4422781440.

The previous prime is 8663886397. The next prime is 8663886419. The reversal of 8663886399 is 9936883668.

It is a Cunningham number, because it is equal to 93080²-1.

It is not a de Polignac number, because 8663886399 - 2¹ = 8663886397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8663886397) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 644919 + ... + 658215.

It is an arithmetic number, because the mean of its divisors is an integer number (229789440).

Almost surely, 2^8663886399 is an apocalyptic number.

8663886399 is a deficient number, since it is larger than the sum of its proper divisors (6042637761).

8663886399 is a wasteful number, since it uses less digits than its factorization.

8663886399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13420.

The product of its digits is 80621568, while the sum is 66.

The square root of 8663886399 is about 93079.9999946283. Note that the first 5 decimals coincide. The cubic root of 8663886399 is about 2053.8603760520.

The spelling of 8663886399 in words is "eight billion, six hundred sixty-three million, eight hundred eighty-six thousand, three hundred ninety-nine".