444440406221 has 8 divisors (see below), whose sum is σ = 525446785920. Its totient is φ = 367812749808.

The previous prime is 444440406209. The next prime is 444440406247. The reversal of 444440406221 is 122604044444.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 444440406221 - 2³⁸ = 169562499277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444440406271) 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, 1094680601 + ... + 1094681006.

It is an arithmetic number, because the mean of its divisors is an integer number (65680848240).

Almost surely, 2^444440406221 is an apocalyptic number.

It is an amenable number.

444440406221 is a deficient number, since it is larger than the sum of its proper divisors (81006379699).

444440406221 is a wasteful number, since it uses less digits than its factorization.

444440406221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189361643.

The product of its (nonzero) digits is 98304, while the sum is 35.

The spelling of 444440406221 in words is "four hundred forty-four billion, four hundred forty million, four hundred six thousand, two hundred twenty-one".