299985 has 16 divisors (see below), whose sum is σ = 548736. Its totient is φ = 137088.

The previous prime is 299983. The next prime is 299993. The reversal of 299985 is 589992.

299985 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 299985 - 2¹ = 299983 is a prime.

It is an Ulam number.

299985 is strictly pandigital in base 7.

It is not an unprimeable number, because it can be changed into a prime (299983) 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, 1324 + ... + 1533.

It is an arithmetic number, because the mean of its divisors is an integer number (34296).

2²⁹⁹⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

299985 is a deficient number, since it is larger than the sum of its proper divisors (248751).

299985 is a wasteful number, since it uses less digits than its factorization.

299985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872.

The product of its digits is 58320, while the sum is 42.

The square root of 299985 is about 547.7088642701. The cubic root of 299985 is about 66.9421792680.

It can be divided in two parts, 29998 and 5, that added together give a palindrome (30003).

The spelling of 299985 in words is "two hundred ninety-nine thousand, nine hundred eighty-five".