444542216 has 8 divisors (see below), whose sum is σ = 833516670. Its totient is φ = 222271104.

The previous prime is 444542209. The next prime is 444542227. The reversal of 444542216 is 612245444.

It can be written as a sum of positive squares in only one way, i.e., 335256100 + 109286116 = 18310^2 + 10454^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27783881 + ... + 27783896.

Almost surely, 2^444542216 is an apocalyptic number.

It is an amenable number.

444542216 is a deficient number, since it is larger than the sum of its proper divisors (388974454).

444542216 is a wasteful number, since it uses less digits than its factorization.

444542216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55567783 (or 55567779 counting only the distinct ones).

The product of its digits is 30720, while the sum is 32.

The square root of 444542216 is about 21084.1697963188. The cubic root of 444542216 is about 763.1987845120.

The spelling of 444542216 in words is "four hundred forty-four million, five hundred forty-two thousand, two hundred sixteen".