444551144 has 8 divisors (see below), whose sum is σ = 833533410. Its totient is φ = 222275568.

The previous prime is 444551143. The next prime is 444551171. The reversal of 444551144 is 441155444.

It can be written as a sum of positive squares in only one way, i.e., 354870244 + 89680900 = 18838^2 + 9470^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 444551144.

It is not an unprimeable number, because it can be changed into a prime (444551143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27784439 + ... + 27784454.

Almost surely, 2^444551144 is an apocalyptic number.

It is an amenable number.

444551144 is a deficient number, since it is larger than the sum of its proper divisors (388982266).

444551144 is a wasteful number, since it uses less digits than its factorization.

444551144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55568899 (or 55568895 counting only the distinct ones).

The product of its digits is 25600, while the sum is 32.

The square root of 444551144 is about 21084.3815180811. The cubic root of 444551144 is about 763.2038937329.

The spelling of 444551144 in words is "four hundred forty-four million, five hundred fifty-one thousand, one hundred forty-four".