444433024421 has 4 divisors (see below), whose sum is σ = 444818483532. Its totient is φ = 444047565312.

The previous prime is 444433024367. The next prime is 444433024481. The reversal of 444433024421 is 124420334444.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 416715436225 + 27717588196 = 645535^2 + 166486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444433024421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444433024481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192727826 + ... + 192730131.

It is an arithmetic number, because the mean of its divisors is an integer number (111204620883).

Almost surely, 2^444433024421 is an apocalyptic number.

It is an amenable number.

444433024421 is a deficient number, since it is larger than the sum of its proper divisors (385459111).

444433024421 is a wasteful number, since it uses less digits than its factorization.

444433024421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385459110.

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 444433024421 its reverse (124420334444), we get a palindrome (568853358865).

The spelling of 444433024421 in words is "four hundred forty-four billion, four hundred thirty-three million, twenty-four thousand, four hundred twenty-one".