444047222521 has 8 divisors (see below), whose sum is σ = 511478466560. Its totient is φ = 377614960128.

The previous prime is 444047222513. The next prime is 444047222527. The reversal of 444047222521 is 125222740444.

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

It is not a de Polignac number, because 444047222521 - 2³ = 444047222513 is a prime.

It is a super-2 number, since 2×444047222521² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444047222527) 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, 249744456 + ... + 249746233.

It is an arithmetic number, because the mean of its divisors is an integer number (63934808320).

Almost surely, 2^444047222521 is an apocalyptic number.

It is an amenable number.

444047222521 is a deficient number, since it is larger than the sum of its proper divisors (67431244039).

444047222521 is a wasteful number, since it uses less digits than its factorization.

444047222521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499490823.

The product of its (nonzero) digits is 143360, while the sum is 37.

Adding to 444047222521 its reverse (125222740444), we get a palindrome (569269962965).

The spelling of 444047222521 in words is "four hundred forty-four billion, forty-seven million, two hundred twenty-two thousand, five hundred twenty-one".