444406812 has 12 divisors (see below), whose sum is σ = 1036949256. Its totient is φ = 148135600.

The previous prime is 444406783. The next prime is 444406813. The reversal of 444406812 is 218604444.

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

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444406813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18516939 + ... + 18516962.

It is an arithmetic number, because the mean of its divisors is an integer number (86412438).

Almost surely, 2^444406812 is an apocalyptic number.

It is an amenable number.

444406812 is an abundant number, since it is smaller than the sum of its proper divisors (592542444).

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

444406812 is a wasteful number, since it uses less digits than its factorization.

444406812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37033908 (or 37033906 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 33.

The square root of 444406812 is about 21080.9585171073. The cubic root of 444406812 is about 763.1212885634.

The spelling of 444406812 in words is "four hundred forty-four million, four hundred six thousand, eight hundred twelve".