444344521 has 16 divisors (see below), whose sum is σ = 491989248. Its totient is φ = 399168000.

The previous prime is 444344477. The next prime is 444344539. The reversal of 444344521 is 125443444.

It is a cyclic number.

It is not a de Polignac number, because 444344521 - 2¹¹ = 444342473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (444344561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245821 + ... + 247621.

It is an arithmetic number, because the mean of its divisors is an integer number (30749328).

Almost surely, 2^444344521 is an apocalyptic number.

It is an amenable number.

444344521 is a deficient number, since it is larger than the sum of its proper divisors (47644727).

444344521 is a wasteful number, since it uses less digits than its factorization.

444344521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472.

The product of its digits is 30720, while the sum is 31.

The square root of 444344521 is about 21079.4810419991. The cubic root of 444344521 is about 763.0856321872.

Adding to 444344521 its reverse (125443444), we get a palindrome (569787965).

The spelling of 444344521 in words is "four hundred forty-four million, three hundred forty-four thousand, five hundred twenty-one".