444311013 has 4 divisors (see below), whose sum is σ = 592414688. Its totient is φ = 296207340.

The previous prime is 444311011. The next prime is 444311027. The reversal of 444311013 is 310113444.

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 not a de Polignac number, because 444311013 - 2¹ = 444311011 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 (444311011) 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, 74051833 + ... + 74051838.

It is an arithmetic number, because the mean of its divisors is an integer number (148103672).

Almost surely, 2^444311013 is an apocalyptic number.

It is an amenable number.

444311013 is a deficient number, since it is larger than the sum of its proper divisors (148103675).

444311013 is a wasteful number, since it uses less digits than its factorization.

444311013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148103674.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 444311013 is about 21078.6862256641. The cubic root of 444311013 is about 763.0664502875.

Adding to 444311013 its reverse (310113444), we get a palindrome (754424457).

The spelling of 444311013 in words is "four hundred forty-four million, three hundred eleven thousand, thirteen".