444444444445 has 8 divisors (see below), whose sum is σ = 533438330040. Its totient is φ = 355485557760.

The previous prime is 444444444443. The next prime is 444444444461. The reversal of 444444444445 is 544444444444.

It can be written as a sum of positive squares in 4 ways, for example, as 46299850276 + 398144594169 = 215174^2 + 630987^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 444444444445 - 2¹ = 444444444443 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444444444443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8721780 + ... + 8772589.

It is an arithmetic number, because the mean of its divisors is an integer number (66679791255).

Almost surely, 2^444444444445 is an apocalyptic number.

It is an amenable number.

444444444445 is a deficient number, since it is larger than the sum of its proper divisors (88993885595).

444444444445 is a wasteful number, since it uses less digits than its factorization.

444444444445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17499455.

The product of its digits is 20971520, while the sum is 49.

Adding to 444444444445 its reverse (544444444444), we get a palindrome (988888888889).

Subtracting 444444444445 from its reverse (544444444444), we obtain a palindrome (99999999999).

It can be divided in two parts, 44444444 and 4445, that added together give a square (44448889 = 6667²).

The spelling of 444444444445 in words is "four hundred forty-four billion, four hundred forty-four million, four hundred forty-four thousand, four hundred forty-five".