8239140513 has 6 divisors (see below), whose sum is σ = 11900980754. Its totient is φ = 5492760336.

The previous prime is 8239140479. The next prime is 8239140529. The reversal of 8239140513 is 3150419328.

8239140513 is a `hidden beast` number, since 8 + 239 + 1 + 405 + 13 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6089149089 + 2149991424 = 78033^2 + 46368^2 .

It is not a de Polignac number, because 8239140513 - 2¹² = 8239136417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8239140583) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 457730020 + ... + 457730037.

Almost surely, 2^8239140513 is an apocalyptic number.

It is an amenable number.

8239140513 is a deficient number, since it is larger than the sum of its proper divisors (3661840241).

8239140513 is a wasteful number, since it uses less digits than its factorization.

8239140513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915460063 (or 915460060 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 8239140513 is about 90769.7114295292. The cubic root of 8239140513 is about 2019.7330393372.

The spelling of 8239140513 in words is "eight billion, two hundred thirty-nine million, one hundred forty thousand, five hundred thirteen".