8239538913 has 16 divisors (see below), whose sum is σ = 11016902016. Its totient is φ = 5477623040.

The previous prime is 8239538897. The next prime is 8239538953. The reversal of 8239538913 is 3198359328.

8239538913 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 8239538913 - 2⁴ = 8239538897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8239538953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2272420 + ... + 2276042.

It is an arithmetic number, because the mean of its divisors is an integer number (688556376).

Almost surely, 2^8239538913 is an apocalyptic number.

It is an amenable number.

8239538913 is a deficient number, since it is larger than the sum of its proper divisors (2777363103).

8239538913 is a wasteful number, since it uses less digits than its factorization.

8239538913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5544.

The product of its digits is 1399680, while the sum is 51.

The square root of 8239538913 is about 90771.9059676506. The cubic root of 8239538913 is about 2019.7655932455.

The spelling of 8239538913 in words is "eight billion, two hundred thirty-nine million, five hundred thirty-eight thousand, nine hundred thirteen".