8939138663 has 8 divisors (see below), whose sum is σ = 11002016928. Its totient is φ = 7072725024.

The previous prime is 8939138651. The next prime is 8939138749. The reversal of 8939138663 is 3668319398.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8939138663 - 2³⁰ = 7865396839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8939138599 and 8939138608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8939138603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49116056 + ... + 49116237.

It is an arithmetic number, because the mean of its divisors is an integer number (1375252116).

Almost surely, 2^8939138663 is an apocalyptic number.

8939138663 is a deficient number, since it is larger than the sum of its proper divisors (2062878265).

8939138663 is a wasteful number, since it uses less digits than its factorization.

8939138663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98232313.

The product of its digits is 5038848, while the sum is 56.

The square root of 8939138663 is about 94547.0182660458. The cubic root of 8939138663 is about 2075.3844480872.

The spelling of 8939138663 in words is "eight billion, nine hundred thirty-nine million, one hundred thirty-eight thousand, six hundred sixty-three".