8585009999 has 16 divisors (see below), whose sum is σ = 8747539584. Its totient is φ = 8424324000.

The previous prime is 8585009987. The next prime is 8585010001. The reversal of 8585009999 is 9999005858.

It is a cyclic number.

It is not a de Polignac number, because 8585009999 - 2⁸ = 8585009743 is a prime.

It is a Duffinian number.

8585009999 is a modest number, since divided by 9999 gives 8585 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8585209999) 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, 10585304 + ... + 10586114.

It is an arithmetic number, because the mean of its divisors is an integer number (546721224).

Almost surely, 2^8585009999 is an apocalyptic number.

8585009999 is a deficient number, since it is larger than the sum of its proper divisors (162529585).

8585009999 is a wasteful number, since it uses less digits than its factorization.

8585009999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718.

The product of its (nonzero) digits is 10497600, while the sum is 62.

The square root of 8585009999 is about 92655.3290372443. The cubic root of 8585009999 is about 2047.6085536968.

The spelling of 8585009999 in words is "eight billion, five hundred eighty-five million, nine thousand, nine hundred ninety-nine".