999985589999 has 24 divisors (see below), whose sum is σ = 1126482278544. Its totient is φ = 886498870400.

The previous prime is 999985589957. The next prime is 999985590029.

999985589999 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 999985589999 - 2²⁴ = 999968812783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999985589299) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11052704 + ... + 11142810.

It is an arithmetic number, because the mean of its divisors is an integer number (46936761606).

Almost surely, 2^999985589999 is an apocalyptic number.

999985589999 is a deficient number, since it is larger than the sum of its proper divisors (126496688545).

999985589999 is a wasteful number, since it uses less digits than its factorization.

999985589999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92407 (or 92396 counting only the distinct ones).

The product of its digits is 68874753600, while the sum is 98.

The spelling of 999985589999 in words is "nine hundred ninety-nine billion, nine hundred eighty-five million, five hundred eighty-nine thousand, nine hundred ninety-nine".