99773 has 4 divisors (see below), whose sum is σ = 105660.
Its totient is φ = 93888.
The previous prime is 99767. The next prime is 99787. The reversal of 99773 is 37799.
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 41209 + 58564 = 203^2 + 242^2
It is a cyclic number.
It is not a de Polignac number, because 99773 - 26 = 99709 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 (99713) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2918 + ... + 2951.
It is an arithmetic number, because the mean of its divisors is an integer number (26415).
299773 is an apocalyptic number.
It is an amenable number.
99773 is a deficient number, since it is larger than the sum of its proper divisors (5887).
99773 is a wasteful number, since it uses less digits than its factorization.
99773 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5886.
The product of its digits is 11907, while the sum is 35.
The square root of 99773 is about 315.8686435846.
The cubic root of 99773 is about 46.3807403719.
The spelling of 99773 in words is "ninety-nine thousand, seven hundred seventy-three".