99005 has 4 divisors (see below), whose sum is σ = 118812. Its totient is φ = 79200.

The previous prime is 98999. The next prime is 99013. The reversal of 99005 is 50099.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10201 + 88804 = 101^2 + 298^2 .

It is not a de Polignac number, because 99005 - 2¹⁶ = 33469 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9896 + ... + 9905.

It is an arithmetic number, because the mean of its divisors is an integer number (29703).

2⁹⁹⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

99005 is a deficient number, since it is larger than the sum of its proper divisors (19807).

99005 is a wasteful number, since it uses less digits than its factorization.

99005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19806.

The product of its (nonzero) digits is 405, while the sum is 23.

The square root of 99005 is about 314.6505998723. The cubic root of 99005 is about 46.2614288775.

The spelling of 99005 in words is "ninety-nine thousand, five".