444623345 has 4 divisors (see below), whose sum is σ = 533548020. Its totient is φ = 355698672.

The previous prime is 444623303. The next prime is 444623357. The reversal of 444623345 is 543326444.

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 103408561 + 341214784 = 10169^2 + 18472^2 .

It is a cyclic number.

It is not a de Polignac number, because 444623345 - 2¹² = 444619249 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44462330 + ... + 44462339.

It is an arithmetic number, because the mean of its divisors is an integer number (133387005).

Almost surely, 2^444623345 is an apocalyptic number.

It is an amenable number.

444623345 is a deficient number, since it is larger than the sum of its proper divisors (88924675).

444623345 is an equidigital number, since it uses as much as digits as its factorization.

444623345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88924674.

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

The square root of 444623345 is about 21086.0936401222. The cubic root of 444623345 is about 763.2452096400.

Adding to 444623345 its reverse (543326444), we get a palindrome (987949789).

The spelling of 444623345 in words is "four hundred forty-four million, six hundred twenty-three thousand, three hundred forty-five".