8985559617 has 6 divisors (see below), whose sum is σ = 12979141682. Its totient is φ = 5990373072.

The previous prime is 8985559589. The next prime is 8985559657. The reversal of 8985559617 is 7169555898.

8985559617 is a `hidden beast` number, since 8 + 9 + 8 + 5 + 5 + 5 + 9 + 617 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8801441856 + 184117761 = 93816^2 + 13569^2 .

It is not a de Polignac number, because 8985559617 - 2¹⁶ = 8985494081 is a prime.

It is a super-2 number, since 2×8985559617² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8985559657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 499197748 + ... + 499197765.

Almost surely, 2^8985559617 is an apocalyptic number.

It is an amenable number.

8985559617 is a deficient number, since it is larger than the sum of its proper divisors (3993582065).

8985559617 is a wasteful number, since it uses less digits than its factorization.

8985559617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998395519 (or 998395516 counting only the distinct ones).

The product of its digits is 27216000, while the sum is 63.

The square root of 8985559617 is about 94792.1917512197. The cubic root of 8985559617 is about 2078.9707383785.

The spelling of 8985559617 in words is "eight billion, nine hundred eighty-five million, five hundred fifty-nine thousand, six hundred seventeen".