320144444 has 6 divisors (see below), whose sum is σ = 560252784. Its totient is φ = 160072220.

The previous prime is 320144431. The next prime is 320144449. The reversal of 320144444 is 444441023.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320144449) by changing a digit.

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 as a sum of consecutive naturals, namely, 40018052 + ... + 40018059.

It is an arithmetic number, because the mean of its divisors is an integer number (93375464).

Almost surely, 2^320144444 is an apocalyptic number.

It is an amenable number.

320144444 is a deficient number, since it is larger than the sum of its proper divisors (240108340).

320144444 is a wasteful number, since it uses less digits than its factorization.

320144444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80036115 (or 80036113 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 320144444 is about 17892.5806970375. The cubic root of 320144444 is about 684.0932780921.

Adding to 320144444 its reverse (444441023), we get a palindrome (764585467).

The spelling of 320144444 in words is "three hundred twenty million, one hundred forty-four thousand, four hundred forty-four".