8039793715209 has 9 divisors (see below), whose sum is σ = 11613047653389. Its totient is φ = 5359856805900.

The previous prime is 8039793715183. The next prime is 8039793715211. The reversal of 8039793715209 is 9025173979308.

The square root of 8039793715209 is 2835453.

It is a perfect power (a square), and thus also a powerful number.

8039793715209 is a `hidden beast` number, since 8 + 0 + 3 + 9 + 79 + 37 + 1 + 520 + 9 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 8039793715209 - 2⁷ = 8039793715081 is a prime.

It is a super-2 number, since 2×8039793715209² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8039793713209) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8033784 + ... + 8978934.

Almost surely, 2^{8039793715209} is an apocalyptic number.

8039793715209 is the 2835453-rd square number.

8039793715209 is the 1417727-th centered octagonal number.

It is an amenable number.

8039793715209 is a deficient number, since it is larger than the sum of its proper divisors (3573253938180).

8039793715209 is an frugal number, since it uses more digits than its factorization.

8039793715209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890308 (or 945154 counting only the distinct ones).

The product of its (nonzero) digits is 25719120, while the sum is 63.

The spelling of 8039793715209 in words is "eight trillion, thirty-nine billion, seven hundred ninety-three million, seven hundred fifteen thousand, two hundred nine".