99443 has 4 divisors (see below), whose sum is σ = 100080.
Its totient is φ = 98808.
The previous prime is 99439. The next prime is 99469. The reversal of 99443 is 34499.
It is a happy number.
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.
It is a cyclic number.
It is not a de Polignac number, because 99443 - 22 = 99439 is a prime.
It is a Duffinian number.
It is a nialpdrome in base 10.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 99443.
It is not an unprimeable number, because it can be changed into a prime (99643) 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, 98 + ... + 456.
It is an arithmetic number, because the mean of its divisors is an integer number (25020).
299443 is an apocalyptic number.
99443 is a deficient number, since it is larger than the sum of its proper divisors (637).
99443 is a wasteful number, since it uses less digits than its factorization.
99443 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 636.
The product of its digits is 3888, while the sum is 29.
The square root of 99443 is about 315.3458418943.
The cubic root of 99443 is about 46.3295490011.
The spelling of 99443 in words is "ninety-nine thousand, four hundred forty-three".