8239712613 has 32 divisors (see below), whose sum is σ = 12119127552. Its totient is φ = 4938024000.

The previous prime is 8239712599. The next prime is 8239712617. The reversal of 8239712613 is 3162179328.

It is not a de Polignac number, because 8239712613 - 2⁵ = 8239712581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8239712617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4942006 + ... + 4943672.

It is an arithmetic number, because the mean of its divisors is an integer number (378722736).

Almost surely, 2^8239712613 is an apocalyptic number.

It is an amenable number.

8239712613 is a deficient number, since it is larger than the sum of its proper divisors (3879414939).

8239712613 is a wasteful number, since it uses less digits than its factorization.

8239712613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3265.

The product of its digits is 108864, while the sum is 42.

The square root of 8239712613 is about 90772.8627564428. The cubic root of 8239712613 is about 2019.7797862249.

The spelling of 8239712613 in words is "eight billion, two hundred thirty-nine million, seven hundred twelve thousand, six hundred thirteen".