23899 has 2 divisors, whose sum is σ = 23900.
Its totient is φ = 23898.
The previous prime is 23893. The next prime is 23909. The reversal of 23899 is 99832.
It is a happy number.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 23899 - 211 = 21851 is a prime.
It is a plaindrome in base 10.
It is a self number, because there is not a number n which added to its sum of digits gives 23899.
It is not a weakly prime, because it can be changed into another prime (23893) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11949 + 11950.
It is an arithmetic number, because the mean of its divisors is an integer number (11950).
223899 is an apocalyptic number.
23899 is a deficient number, since it is larger than the sum of its proper divisors (1).
23899 is an equidigital number, since it uses as much as digits as its factorization.
23899 is an evil number, because the sum of its binary digits is even.
The product of its digits is 3888, while the sum is 31.
The square root of 23899 is about 154.5930140724.
The cubic root of 23899 is about 28.8044713994.
The spelling of 23899 in words is "twenty-three thousand, eight hundred ninety-nine".