444555421435 has 4 divisors (see below), whose sum is σ = 533466505728. Its totient is φ = 355644337144.

The previous prime is 444555421417. The next prime is 444555421447. The reversal of 444555421435 is 534124555444.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444555421435 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44455542139 + ... + 44455542148.

It is an arithmetic number, because the mean of its divisors is an integer number (133366626432).

Almost surely, 2^444555421435 is an apocalyptic number.

444555421435 is a deficient number, since it is larger than the sum of its proper divisors (88911084293).

444555421435 is an equidigital number, since it uses as much as digits as its factorization.

444555421435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88911084292.

The product of its digits is 3840000, while the sum is 46.

Adding to 444555421435 its reverse (534124555444), we get a palindrome (978679976879).

The spelling of 444555421435 in words is "four hundred forty-four billion, five hundred fifty-five million, four hundred twenty-one thousand, four hundred thirty-five".