4441821 has 8 divisors (see below), whose sum is σ = 5932320. Its totient is φ = 2956272.

The previous prime is 4441793. The next prime is 4441823. The reversal of 4441821 is 1281444.

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

It is not a de Polignac number, because 4441821 - 2⁶ = 4441757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4441791 and 4441800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4441823) 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 7 ways as a sum of consecutive naturals, for example, 2331 + ... + 3783.

It is an arithmetic number, because the mean of its divisors is an integer number (741540).

Almost surely, 2^4441821 is an apocalyptic number.

It is an amenable number.

4441821 is a deficient number, since it is larger than the sum of its proper divisors (1490499).

4441821 is a wasteful number, since it uses less digits than its factorization.

4441821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2475.

The product of its digits is 1024, while the sum is 24.

The square root of 4441821 is about 2107.5628104519. The cubic root of 4441821 is about 164.3817820697.

The spelling of 4441821 in words is "four million, four hundred forty-one thousand, eight hundred twenty-one".