22999 has 4 divisors (see below), whose sum is σ = 23320.
Its totient is φ = 22680.
The previous prime is 22993. The next prime is 23003. The reversal of 22999 is 99922.
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 22999 - 27 = 22871 is a prime.
It is a Duffinian number.
22999 is a modest number, since divided by 999 gives 22 as remainder.
22999 is a lucky number.
It is a plaindrome in base 10.
It is a zygodrome in base 10.
It is a self number, because there is not a number n which added to its sum of digits gives 22999.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (22993) 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, 4 + ... + 214.
It is an arithmetic number, because the mean of its divisors is an integer number (5830).
222999 is an apocalyptic number.
22999 is a deficient number, since it is larger than the sum of its proper divisors (321).
22999 is a wasteful number, since it uses less digits than its factorization.
22999 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 320.
The product of its digits is 2916, while the sum is 31.
The square root of 22999 is about 151.6542119428.
The cubic root of 22999 is about 28.4382576379.
The spelling of 22999 in words is "twenty-two thousand, nine hundred ninety-nine".