999585999 has 6 divisors (see below), whose sum is σ = 1443846456. Its totient is φ = 666390660.

The previous prime is 999585929. The next prime is 999586001.

999585999 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 999585999 - 2⁷ = 999585871 is a prime.

It is a super-3 number, since 3×999585999³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999585929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55532547 + ... + 55532564.

It is an arithmetic number, because the mean of its divisors is an integer number (240641076).

Almost surely, 2^999585999 is an apocalyptic number.

999585999 is a deficient number, since it is larger than the sum of its proper divisors (444260457).

999585999 is a wasteful number, since it uses less digits than its factorization.

999585999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111065117 (or 111065114 counting only the distinct ones).

The product of its digits is 106288200, while the sum is 72.

The square root of 999585999 is about 31616.2299934701. The cubic root of 999585999 is about 999.8619806182.

The spelling of 999585999 in words is "nine hundred ninety-nine million, five hundred eighty-five thousand, nine hundred ninety-nine".