285099 has 12 divisors (see below), whose sum is σ = 397176. Its totient is φ = 181888.

The previous prime is 285091. The next prime is 285101. The reversal of 285099 is 990582.

285099 is nontrivially palindromic in base 13.

It is not a de Polignac number, because 285099 - 2³ = 285091 is a prime.

285099 is an undulating number in base 13.

It is a plaindrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 285099.

It is not an unprimeable number, because it can be changed into a prime (285091) 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, 2467 + ... + 2579.

It is an arithmetic number, because the mean of its divisors is an integer number (33098).

2²⁸⁵⁰⁹⁹ is an apocalyptic number.

285099 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

285099 is a deficient number, since it is larger than the sum of its proper divisors (112077).

285099 is a wasteful number, since it uses less digits than its factorization.

285099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 285099 is about 533.9466265461. The cubic root of 285099 is about 65.8160626953.

The spelling of 285099 in words is "two hundred eighty-five thousand, ninety-nine".