444024213421 has 4 divisors (see below), whose sum is σ = 444025584000. Its totient is φ = 444022842844.

The previous prime is 444024213419. The next prime is 444024213509. The reversal of 444024213421 is 124312420444.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 444024213421 - 2¹ = 444024213419 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 (444024213401) 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, 102660 + ... + 947938.

It is an arithmetic number, because the mean of its divisors is an integer number (111006396000).

Almost surely, 2^444024213421 is an apocalyptic number.

It is an amenable number.

444024213421 is a deficient number, since it is larger than the sum of its proper divisors (1370579).

444024213421 is an equidigital number, since it uses as much as digits as its factorization.

444024213421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370578.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 444024213421 its reverse (124312420444), we get a palindrome (568336633865).

The spelling of 444024213421 in words is "four hundred forty-four billion, twenty-four million, two hundred thirteen thousand, four hundred twenty-one".