444421308 has 12 divisors (see below), whose sum is σ = 1036983080. Its totient is φ = 148140432.

The previous prime is 444421303. The next prime is 444421321. The reversal of 444421308 is 803124444.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×444421308³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444421303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18517543 + ... + 18517566.

Almost surely, 2^444421308 is an apocalyptic number.

It is an amenable number.

444421308 is an abundant number, since it is smaller than the sum of its proper divisors (592561772).

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

444421308 is a wasteful number, since it uses less digits than its factorization.

444421308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37035116 (or 37035114 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 444421308 is about 21081.3023316872. The cubic root of 444421308 is about 763.1295858304.

It can be divided in two parts, 4444 and 21308, that added together give a palindrome (25752).

The spelling of 444421308 in words is "four hundred forty-four million, four hundred twenty-one thousand, three hundred eight".