409044 has 24 divisors (see below), whose sum is σ = 967680. Its totient is φ = 134464.

The previous prime is 409043. The next prime is 409063. The reversal of 409044 is 440904.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 409044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 877 + ... + 1259.

It is an arithmetic number, because the mean of its divisors is an integer number (40320).

2⁴⁰⁹⁰⁴⁴ is an apocalyptic number.

It is an amenable number.

409044 is an abundant number, since it is smaller than the sum of its proper divisors (558636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

409044 is a wasteful number, since it uses less digits than its factorization.

409044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 477 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 409044 is about 639.5654774923. The cubic root of 409044 is about 74.2318029526.

Adding to 409044 its reverse (440904), we get a palindrome (849948).

The spelling of 409044 in words is "four hundred nine thousand, forty-four".