441818 has 8 divisors (see below), whose sum is σ = 713748. Its totient is φ = 203904.

The previous prime is 441811. The next prime is 441827. The reversal of 441818 is 818144.

It can be written as a sum of positive squares in 2 ways, for example, as 375769 + 66049 = 613^2 + 257^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 16993 = 441818 / (4 + 4 + 1 + 8 + 1 + 8).

441818 is a modest number, since divided by 1818 gives 44 as remainder.

It is not an unprimeable number, because it can be changed into a prime (441811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8471 + ... + 8522.

2⁴⁴¹⁸¹⁸ is an apocalyptic number.

441818 is a deficient number, since it is larger than the sum of its proper divisors (271930).

441818 is a wasteful number, since it uses less digits than its factorization.

441818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17008.

The product of its digits is 1024, while the sum is 26.

The square root of 441818 is about 664.6939145201. The cubic root of 441818 is about 76.1636593247.

It can be divided in two parts, 4418 and 18, that multiplied together give a square (79524 = 282²).

The spelling of 441818 in words is "four hundred forty-one thousand, eight hundred eighteen".