16441 has 4 divisors (see below), whose sum is σ = 16884. Its totient is φ = 16000.
The previous prime is 16433. The next prime is 16447. The reversal of 16441 is 14461.
It is a happy number.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 9216 + 7225 = 96^2 + 85^2 .
It is a 3-Lehmer number, since φ(16441) divides (16441-1)3.
It is a cyclic number.
It is not a de Polignac number, because 16441 - 23 = 16433 is a prime.
It is a super-3 number, since 3×164413 = 13332326562363, which contains 333 as substring.
It is a Duffinian number.
It is a nialpdrome in base 12.
It is not an unprimeable number, because it can be changed into a prime (16447) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160 + ... + 241.
It is an arithmetic number, because the mean of its divisors is an integer number (4221).
It is an amenable number.
16441 is a deficient number, since it is larger than the sum of its proper divisors (443).
16441 is an equidigital number, since it uses as much as digits as its factorization.
16441 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 442.
The product of its digits is 96, while the sum is 16.
The square root of 16441 is about 128.2224629306. Note that the first 3 decimals coincide. The cubic root of 16441 is about 25.4278364713.
It can be divided in two parts, 164 and 41, that multiplied together give a square (6724 = 822).
The spelling of 16441 in words is "sixteen thousand, four hundred forty-one".
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