441409 has 8 divisors (see below), whose sum is σ = 472320. Its totient is φ = 411600.

The previous prime is 441403. The next prime is 441421. The reversal of 441409 is 904144.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 441409 - 2⁷ = 441281 is a prime.

It is an Ulam number.

It is a Duffinian number.

441409 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 441409.

It is not an unprimeable number, because it can be changed into a prime (441403) 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, 654 + ... + 1144.

It is an arithmetic number, because the mean of its divisors is an integer number (59040).

2⁴⁴¹⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

441409 is a deficient number, since it is larger than the sum of its proper divisors (30911).

441409 is a wasteful number, since it uses less digits than its factorization.

441409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 441409 is about 664.3861828786. The cubic root of 441409 is about 76.1401499808.

The spelling of 441409 in words is "four hundred forty-one thousand, four hundred nine".