544432321 has 8 divisors (see below), whose sum is σ = 554793984. Its totient is φ = 534149280.

The previous prime is 544432307. The next prime is 544432367. The reversal of 544432321 is 123234445.

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 544432321 - 2⁹ = 544431809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 544432321.

It is not an unprimeable number, because it can be changed into a prime (544432621) 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, 5581 + ... + 33466.

It is an arithmetic number, because the mean of its divisors is an integer number (69349248).

Almost surely, 2^544432321 is an apocalyptic number.

It is an amenable number.

544432321 is a deficient number, since it is larger than the sum of its proper divisors (10361663).

544432321 is a wasteful number, since it uses less digits than its factorization.

544432321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39311.

The product of its digits is 11520, while the sum is 28.

The square root of 544432321 is about 23333.0735437919. The cubic root of 544432321 is about 816.5472113122.

Adding to 544432321 its reverse (123234445), we get a palindrome (667666766).

The spelling of 544432321 in words is "five hundred forty-four million, four hundred thirty-two thousand, three hundred twenty-one".