444329807646 has 16 divisors (see below), whose sum is σ = 888672124800. Its totient is φ = 148107850968.

The previous prime is 444329807641. The next prime is 444329807657. The reversal of 444329807646 is 646708923444.

It is a super-2 number, since 2×444329807646² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444329807641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22816 + ... + 942963.

It is an arithmetic number, because the mean of its divisors is an integer number (55542007800).

Almost surely, 2^444329807646 is an apocalyptic number.

444329807646 is an abundant number, since it is smaller than the sum of its proper divisors (444342317154).

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

444329807646 is a wasteful number, since it uses less digits than its factorization.

444329807646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042463.

The product of its (nonzero) digits is 27869184, while the sum is 57.

The spelling of 444329807646 in words is "four hundred forty-four billion, three hundred twenty-nine million, eight hundred seven thousand, six hundred forty-six".