44380013 has 4 divisors (see below), whose sum is σ = 46990620. Its totient is φ = 41769408.

The previous prime is 44379997. The next prime is 44380033. The reversal of 44380013 is 31008344.

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 37478884 + 6901129 = 6122^2 + 2627^2 .

It is not a de Polignac number, because 44380013 - 2⁴ = 44379997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44380033) 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, 1305278 + ... + 1305311.

It is an arithmetic number, because the mean of its divisors is an integer number (11747655).

Almost surely, 2^44380013 is an apocalyptic number.

It is an amenable number.

44380013 is a deficient number, since it is larger than the sum of its proper divisors (2610607).

44380013 is a wasteful number, since it uses less digits than its factorization.

44380013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610606.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 44380013 is about 6661.8325556862. The cubic root of 44380013 is about 354.0482687115.

Adding to 44380013 its reverse (31008344), we get a palindrome (75388357).

The spelling of 44380013 in words is "forty-four million, three hundred eighty thousand, thirteen".