544409 has 4 divisors (see below), whose sum is σ = 546000. Its totient is φ = 542820.

The previous prime is 544403. The next prime is 544429. The reversal of 544409 is 904445.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-544409 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 544409.

It is not an unprimeable number, because it can be changed into a prime (544403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47 + ... + 1044.

It is an arithmetic number, because the mean of its divisors is an integer number (136500).

2⁵⁴⁴⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

544409 is a deficient number, since it is larger than the sum of its proper divisors (1591).

544409 is a wasteful number, since it uses less digits than its factorization.

544409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 544409 is about 737.8407687299. The cubic root of 544409 is about 81.6535552092.

The spelling of 544409 in words is "five hundred forty-four thousand, four hundred nine".