444115816 has 8 divisors (see below), whose sum is σ = 832717170. Its totient is φ = 222057904.

The previous prime is 444115811. The next prime is 444115817. The reversal of 444115816 is 618511444.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 362140900 + 81974916 = 19030^2 + 9054^2 .

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

It is not an unprimeable number, because it can be changed into a prime (444115811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27757231 + ... + 27757246.

Almost surely, 2^444115816 is an apocalyptic number.

It is an amenable number.

444115816 is a deficient number, since it is larger than the sum of its proper divisors (388601354).

444115816 is a wasteful number, since it uses less digits than its factorization.

444115816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55514483 (or 55514479 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 444115816 is about 21074.0555185754. The cubic root of 444115816 is about 762.9546891599.

The spelling of 444115816 in words is "four hundred forty-four million, one hundred fifteen thousand, eight hundred sixteen".