8869394647 has 4 divisors (see below), whose sum is σ = 8870136376. Its totient is φ = 8868652920.

The previous prime is 8869394641. The next prime is 8869394669. The reversal of 8869394647 is 7464939688.

8869394647 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 8869394647 - 2¹⁹ = 8868870359 is a prime.

It is a super-2 number, since 2×8869394647² (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 (8869394641) 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, 352629 + ... + 376942.

It is an arithmetic number, because the mean of its divisors is an integer number (2217534094).

Almost surely, 2^8869394647 is an apocalyptic number.

8869394647 is a deficient number, since it is larger than the sum of its proper divisors (741729).

8869394647 is a wasteful number, since it uses less digits than its factorization.

8869394647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741728.

The product of its digits is 62705664, while the sum is 64.

The square root of 8869394647 is about 94177.4635833860. The cubic root of 8869394647 is about 2069.9729003741.

The spelling of 8869394647 in words is "eight billion, eight hundred sixty-nine million, three hundred ninety-four thousand, six hundred forty-seven".