985923999 has 12 divisors (see below), whose sum is σ = 1426466496. Its totient is φ = 656196192.

The previous prime is 985923997. The next prime is 985924019. The reversal of 985923999 is 999329589.

985923999 is a `hidden beast` number, since 9 + 8 + 592 + 39 + 9 + 9 = 666.

It is not a de Polignac number, because 985923999 - 2¹ = 985923997 is a prime.

It is a super-2 number, since 2×985923999² = 1944092263608304002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985923997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84774 + ... + 95699.

It is an arithmetic number, because the mean of its divisors is an integer number (118872208).

Almost surely, 2^985923999 is an apocalyptic number.

985923999 is a deficient number, since it is larger than the sum of its proper divisors (440542497).

985923999 is a wasteful number, since it uses less digits than its factorization.

985923999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181086 (or 181083 counting only the distinct ones).

The product of its digits is 14171760, while the sum is 63.

The square root of 985923999 is about 31399.4267304357. The cubic root of 985923999 is about 995.2858110109.

The spelling of 985923999 in words is "nine hundred eighty-five million, nine hundred twenty-three thousand, nine hundred ninety-nine".