444405213323 has 4 divisors (see below), whose sum is σ = 454740218328. Its totient is φ = 434070208320.

The previous prime is 444405213293. The next prime is 444405213361. The reversal of 444405213323 is 323312504444.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444405213323 is a prime.

It is a super-2 number, since 2×444405213323² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444405213383) 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, 5167502438 + ... + 5167502523.

It is an arithmetic number, because the mean of its divisors is an integer number (113685054582).

Almost surely, 2^444405213323 is an apocalyptic number.

444405213323 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

444405213323 is a deficient number, since it is larger than the sum of its proper divisors (10335005005).

444405213323 is a wasteful number, since it uses less digits than its factorization.

444405213323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10335005004.

The product of its (nonzero) digits is 138240, while the sum is 35.

Adding to 444405213323 its reverse (323312504444), we get a palindrome (767717717767).

The spelling of 444405213323 in words is "four hundred forty-four billion, four hundred five million, two hundred thirteen thousand, three hundred twenty-three".