99205 has 4 divisors (see below), whose sum is σ = 119052. Its totient is φ = 79360.

The previous prime is 99191. The next prime is 99223. The reversal of 99205 is 50299.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50299 = 179 ⋅281.

It can be written as a sum of positive squares in 2 ways, for example, as 12769 + 86436 = 113^2 + 294^2 .

It is not a de Polignac number, because 99205 - 2⁵ = 99173 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9916 + ... + 9925.

It is an arithmetic number, because the mean of its divisors is an integer number (29763).

2⁹⁹²⁰⁵ is an apocalyptic number.

It is an amenable number.

99205 is a deficient number, since it is larger than the sum of its proper divisors (19847).

99205 is a wasteful number, since it uses less digits than its factorization.

99205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19846.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 99205 is about 314.9682523684. The cubic root of 99205 is about 46.2925588291.

The spelling of 99205 in words is "ninety-nine thousand, two hundred five".