444405216 has 48 divisors (see below), whose sum is σ = 1170968400. Its totient is φ = 147575808.

The previous prime is 444405161. The next prime is 444405223. The reversal of 444405216 is 612504444.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17220 + ... + 34428.

It is an arithmetic number, because the mean of its divisors is an integer number (24395175).

Almost surely, 2^444405216 is an apocalyptic number.

It is an amenable number.

444405216 is an abundant number, since it is smaller than the sum of its proper divisors (726563184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

444405216 is a wasteful number, since it uses less digits than its factorization.

444405216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17491 (or 17483 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 444405216 is about 21080.9206630071. The cubic root of 444405216 is about 763.1203750287.

The spelling of 444405216 in words is "four hundred forty-four million, four hundred five thousand, two hundred sixteen".