444842081 has 4 divisors (see below), whose sum is σ = 444885012. Its totient is φ = 444799152.

The previous prime is 444842063. The next prime is 444842089. The reversal of 444842081 is 180248444.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 114147856 + 330694225 = 10684^2 + 18185^2 .

It is a cyclic number.

It is not a de Polignac number, because 444842081 - 2⁶ = 444842017 is a prime.

It is a super-2 number, since 2×444842081² = 395768954056821122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (444842089) 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 in 3 ways as a sum of consecutive naturals, for example, 4751 + ... + 30203.

It is an arithmetic number, because the mean of its divisors is an integer number (111221253).

Almost surely, 2^444842081 is an apocalyptic number.

It is an amenable number.

444842081 is a deficient number, since it is larger than the sum of its proper divisors (42931).

444842081 is a wasteful number, since it uses less digits than its factorization.

444842081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42930.

The product of its (nonzero) digits is 32768, while the sum is 35.

The square root of 444842081 is about 21091.2797383184. The cubic root of 444842081 is about 763.3703506432.

The spelling of 444842081 in words is "four hundred forty-four million, eight hundred forty-two thousand, eighty-one".