444424304440013 has 4 divisors (see below), whose sum is σ = 446382120759360. Its totient is φ = 442466488120668.

The previous prime is 444424304439971. The next prime is 444424304440019. The reversal of 444424304440013 is 310044403424444.

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 not a de Polignac number, because 444424304440013 - 2¹⁸ = 444424304177869 is a prime.

It is a super-3 number, since 3×444424304440013³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444424304440019) 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, 978908159333 + ... + 978908159786.

It is an arithmetic number, because the mean of its divisors is an integer number (111595530189840).

Almost surely, 2^{444424304440013} is an apocalyptic number.

It is an amenable number.

444424304440013 is a deficient number, since it is larger than the sum of its proper divisors (1957816319347).

444424304440013 is a wasteful number, since it uses less digits than its factorization.

444424304440013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957816319346.

The product of its (nonzero) digits is 1179648, while the sum is 41.

Adding to 444424304440013 its reverse (310044403424444), we get a palindrome (754468707864457).

The spelling of 444424304440013 in words is "four hundred forty-four trillion, four hundred twenty-four billion, three hundred four million, four hundred forty thousand, thirteen".