444666445 has 16 divisors (see below), whose sum is σ = 538799040. Its totient is φ = 352283904.

The previous prime is 444666401. The next prime is 444666457. The reversal of 444666445 is 544666444.

444666445 = 1570² + 1571² + ... + 1732².

It is a cyclic number.

It is not a de Polignac number, because 444666445 - 2⁷ = 444666317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273846 + ... + 275464.

It is an arithmetic number, because the mean of its divisors is an integer number (33674940).

Almost surely, 2^444666445 is an apocalyptic number.

It is an amenable number.

444666445 is a deficient number, since it is larger than the sum of its proper divisors (94132595).

444666445 is a wasteful number, since it uses less digits than its factorization.

444666445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124.

The product of its digits is 1105920, while the sum is 43.

The square root of 444666445 is about 21087.1156159395. The cubic root of 444666445 is about 763.2698708175.

Subtracting 444666445 from its reverse (544666444), we obtain a palindrome (99999999).

The spelling of 444666445 in words is "four hundred forty-four million, six hundred sixty-six thousand, four hundred forty-five".