99822 has 16 divisors (see below), whose sum is σ = 202752. Its totient is φ = 32760.

The previous prime is 99817. The next prime is 99823. The reversal of 99822 is 22899.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 99822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99823) by changing a digit.

99822 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 697 + ... + 827.

It is an arithmetic number, because the mean of its divisors is an integer number (12672).

2⁹⁹⁸²² is an apocalyptic number.

99822 is an abundant number, since it is smaller than the sum of its proper divisors (102930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101376).

99822 is a wasteful number, since it uses less digits than its factorization.

99822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263.

The product of its digits is 2592, while the sum is 30.

The square root of 99822 is about 315.9461979515. The cubic root of 99822 is about 46.3883318857.

The spelling of 99822 in words is "ninety-nine thousand, eight hundred twenty-two".