445331444 has 12 divisors (see below), whose sum is σ = 779810304. Its totient is φ = 222528504.

The previous prime is 445331441. The next prime is 445331477. The reversal of 445331444 is 444133544.

It is a self number, because there is not a number n which added to its sum of digits gives 445331444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445331441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26822 + ... + 40125.

It is an arithmetic number, because the mean of its divisors is an integer number (64984192).

Almost surely, 2^445331444 is an apocalyptic number.

It is an amenable number.

445331444 is a deficient number, since it is larger than the sum of its proper divisors (334478860).

445331444 is a wasteful number, since it uses less digits than its factorization.

445331444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68614 (or 68612 counting only the distinct ones).

The product of its digits is 46080, while the sum is 32.

The square root of 445331444 is about 21102.8776236797. The cubic root of 445331444 is about 763.6501715208.

Adding to 445331444 its reverse (444133544), we get a palindrome (889464988).

The spelling of 445331444 in words is "four hundred forty-five million, three hundred thirty-one thousand, four hundred forty-four".