8585387917 has 2 divisors, whose sum is σ = 8585387918. Its totient is φ = 8585387916.

The previous prime is 8585387887. The next prime is 8585387989. The reversal of 8585387917 is 7197835858.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6422579881 + 2162808036 = 80141^2 + 46506^2 .

It is a cyclic number.

It is not a de Polignac number, because 8585387917 - 2¹¹ = 8585385869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8585307917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4292693958 + 4292693959.

It is an arithmetic number, because the mean of its divisors is an integer number (4292693959).

Almost surely, 2^8585387917 is an apocalyptic number.

It is an amenable number.

8585387917 is a deficient number, since it is larger than the sum of its proper divisors (1).

8585387917 is an equidigital number, since it uses as much as digits as its factorization.

8585387917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16934400, while the sum is 61.

The square root of 8585387917 is about 92657.3683902149. The cubic root of 8585387917 is about 2047.6385989646.

The spelling of 8585387917 in words is "eight billion, five hundred eighty-five million, three hundred eighty-seven thousand, nine hundred seventeen".