299999 has 8 divisors (see below), whose sum is σ = 363168. Its totient is φ = 241920.

The previous prime is 299993. The next prime is 300007. The reversal of 299999 is 999992.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 299999 - 2⁴ = 299983 is a prime.

It is a Duffinian number.

299999 is a modest number, since divided by 999 gives 299 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (299993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1142 + ... + 1379.

It is an arithmetic number, because the mean of its divisors is an integer number (45396).

2²⁹⁹⁹⁹⁹ is an apocalyptic number.

299999 is a deficient number, since it is larger than the sum of its proper divisors (63169).

299999 is a wasteful number, since it uses less digits than its factorization.

299999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2545.

The product of its digits is 118098, while the sum is 47.

The square root of 299999 is about 547.7216446335. The cubic root of 299999 is about 66.9432206267.

It can be divided in two parts, 2 and 99999, that added together give a palindrome (100001).

The spelling of 299999 in words is "two hundred ninety-nine thousand, nine hundred ninety-nine".