8039520705 has 16 divisors (see below), whose sum is σ = 12866590080. Its totient is φ = 4286625408.

The previous prime is 8039520703. The next prime is 8039520761. The reversal of 8039520705 is 5070259308.

It is not a de Polignac number, because 8039520705 - 2¹ = 8039520703 is a prime.

It is a super-2 number, since 2×8039520705² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8039520703) 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, 8820 + ... + 127109.

It is an arithmetic number, because the mean of its divisors is an integer number (804161880).

Almost surely, 2^8039520705 is an apocalyptic number.

It is an amenable number.

8039520705 is a deficient number, since it is larger than the sum of its proper divisors (4827069375).

8039520705 is a wasteful number, since it uses less digits than its factorization.

8039520705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139880.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 8039520705 is about 89663.3743788399. The cubic root of 8039520705 is about 2003.2879837028.

The spelling of 8039520705 in words is "eight billion, thirty-nine million, five hundred twenty thousand, seven hundred five".