99853 has 4 divisors (see below), whose sum is σ = 107548. Its totient is φ = 92160.

The previous prime is 99839. The next prime is 99859. The reversal of 99853 is 35899.

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 40804 + 59049 = 202^2 + 243^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99853 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99859) by changing a digit.

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, 3828 + ... + 3853.

It is an arithmetic number, because the mean of its divisors is an integer number (26887).

2⁹⁹⁸⁵³ is an apocalyptic number.

It is an amenable number.

99853 is a deficient number, since it is larger than the sum of its proper divisors (7695).

99853 is a wasteful number, since it uses less digits than its factorization.

99853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7694.

The product of its digits is 9720, while the sum is 34.

The square root of 99853 is about 315.9952531289. The cubic root of 99853 is about 46.3931333973.

The spelling of 99853 in words is "ninety-nine thousand, eight hundred fifty-three".