444214023421 has 4 divisors (see below), whose sum is σ = 507673169632. Its totient is φ = 380754877212.

The previous prime is 444214023413. The next prime is 444214023433. The reversal of 444214023421 is 124320412444.

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.

It is a cyclic number.

It is not a de Polignac number, because 444214023421 - 2³ = 444214023413 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 (444214020421) 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, 31729573095 + ... + 31729573108.

It is an arithmetic number, because the mean of its divisors is an integer number (126918292408).

Almost surely, 2^444214023421 is an apocalyptic number.

It is an amenable number.

444214023421 is a deficient number, since it is larger than the sum of its proper divisors (63459146211).

444214023421 is an equidigital number, since it uses as much as digits as its factorization.

444214023421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63459146210.

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

Adding to 444214023421 its reverse (124320412444), we get a palindrome (568534435865).

The spelling of 444214023421 in words is "four hundred forty-four billion, two hundred fourteen million, twenty-three thousand, four hundred twenty-one".