44320405 has 4 divisors (see below), whose sum is σ = 53184492. Its totient is φ = 35456320.

The previous prime is 44320403. The next prime is 44320427. The reversal of 44320405 is 50402344.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34035556 + 10284849 = 5834^2 + 3207^2 .

It is not a de Polignac number, because 44320405 - 2¹ = 44320403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44320403) 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 3 ways as a sum of consecutive naturals, for example, 4432036 + ... + 4432045.

It is an arithmetic number, because the mean of its divisors is an integer number (13296123).

Almost surely, 2^44320405 is an apocalyptic number.

It is an amenable number.

44320405 is a deficient number, since it is larger than the sum of its proper divisors (8864087).

44320405 is an equidigital number, since it uses as much as digits as its factorization.

44320405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8864086.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 44320405 is about 6657.3572083823. The cubic root of 44320405 is about 353.8896870789.

Adding to 44320405 its reverse (50402344), we get a palindrome (94722749).

The spelling of 44320405 in words is "forty-four million, three hundred twenty thousand, four hundred five".