44399 has 4 divisors (see below), whose sum is σ = 45960.
Its totient is φ = 42840.
The previous prime is 44389. The next prime is 44417. The reversal of 44399 is 99344.
Subtracting 44399 from its reverse (99344), we obtain a palindrome (54945).
It is a happy number.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 44399 - 24 = 44383 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 1531 = 44399 / (4 + 4 + 3 + 9 + 9).
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (44389) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 737 + ... + 794.
It is an arithmetic number, because the mean of its divisors is an integer number (11490).
244399 is an apocalyptic number.
44399 is a deficient number, since it is larger than the sum of its proper divisors (1561).
44399 is a wasteful number, since it uses less digits than its factorization.
44399 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1560.
The product of its digits is 3888, while the sum is 29.
The square root of 44399 is about 210.7107021487.
The cubic root of 44399 is about 35.4098752068.
The spelling of 44399 in words is "forty-four thousand, three hundred ninety-nine".