84441 has 8 divisors (see below), whose sum is σ = 128704. Its totient is φ = 48240.
The previous prime is 84437. The next prime is 84443. The reversal of 84441 is 14448.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 84441 - 22 = 84437 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 4021 = 84441 / (8 + 4 + 4 + 4 + 1).
It is a Duffinian number.
It is a nialpdrome in base 10.
It is not an unprimeable number, because it can be changed into a prime (84443) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1990 + ... + 2031.
It is an arithmetic number, because the mean of its divisors is an integer number (16088).
284441 is an apocalyptic number.
It is an amenable number.
84441 is a deficient number, since it is larger than the sum of its proper divisors (44263).
84441 is a wasteful number, since it uses less digits than its factorization.
84441 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4031.
The product of its digits is 512, while the sum is 21.
The square root of 84441 is about 290.5873362691. The cubic root of 84441 is about 43.8716992509.
Adding to 84441 its reverse (14448), we get a palindrome (98889).
It can be divided in two parts, 84 and 441, that added together give a palindrome (525).
The spelling of 84441 in words is "eighty-four thousand, four hundred forty-one".
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