8666885239 has 4 divisors (see below), whose sum is σ = 8670527640. Its totient is φ = 8663242840.

The previous prime is 8666885147. The next prime is 8666885267. The reversal of 8666885239 is 9325886668.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8666885239 - 2⁹ = 8666884727 is a prime.

It is a super-2 number, since 2×8666885239² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8666885839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1817629 + ... + 1822390.

It is an arithmetic number, because the mean of its divisors is an integer number (2167631910).

Almost surely, 2^8666885239 is an apocalyptic number.

8666885239 is a deficient number, since it is larger than the sum of its proper divisors (3642401).

8666885239 is a wasteful number, since it uses less digits than its factorization.

8666885239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3642400.

The product of its digits is 29859840, while the sum is 61.

The square root of 8666885239 is about 93096.1075394670. The cubic root of 8666885239 is about 2054.0973169918.

The spelling of 8666885239 in words is "eight billion, six hundred sixty-six million, eight hundred eighty-five thousand, two hundred thirty-nine".