8485717769 has 2 divisors, whose sum is σ = 8485717770. Its totient is φ = 8485717768.

The previous prime is 8485717763. The next prime is 8485717777. The reversal of 8485717769 is 9677175848.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5516775625 + 2968942144 = 74275^2 + 54488^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8485717769 is a prime.

It is a super-2 number, since 2×8485717769² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8485717763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4242858884 + 4242858885.

It is an arithmetic number, because the mean of its divisors is an integer number (4242858885).

Almost surely, 2^8485717769 is an apocalyptic number.

It is an amenable number.

8485717769 is a deficient number, since it is larger than the sum of its proper divisors (1).

8485717769 is an equidigital number, since it uses as much as digits as its factorization.

8485717769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23708160, while the sum is 62.

The square root of 8485717769 is about 92117.9557361104. The cubic root of 8485717769 is about 2039.6838681759.

The spelling of 8485717769 in words is "eight billion, four hundred eighty-five million, seven hundred seventeen thousand, seven hundred sixty-nine".