444400866500 has 24 divisors (see below), whose sum is σ = 970571493528. Its totient is φ = 177760346400.

The previous prime is 444400866493. The next prime is 444400866557. The reversal of 444400866500 is 5668004444.

It can be written as a sum of positive squares in 4 ways, for example, as 80318960836 + 364081905664 = 283406^2 + 603392^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444400367 + ... + 444401366.

It is an arithmetic number, because the mean of its divisors is an integer number (40440478897).

Almost surely, 2^444400866500 is an apocalyptic number.

It is an amenable number.

444400866500 is an abundant number, since it is smaller than the sum of its proper divisors (526170627028).

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

444400866500 is a wasteful number, since it uses less digits than its factorization.

444400866500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888801752 (or 888801740 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 41.

The spelling of 444400866500 in words is "four hundred forty-four billion, four hundred million, eight hundred sixty-six thousand, five hundred".