444121313 has 4 divisors (see below), whose sum is σ = 444215088. Its totient is φ = 444027540.

The previous prime is 444121289. The next prime is 444121319. The reversal of 444121313 is 313121444.

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 444121313 - 2²⁰ = 443072737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444121319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39383 + ... + 49388.

It is an arithmetic number, because the mean of its divisors is an integer number (111053772).

Almost surely, 2^444121313 is an apocalyptic number.

It is an amenable number.

444121313 is a deficient number, since it is larger than the sum of its proper divisors (93775).

444121313 is an equidigital number, since it uses as much as digits as its factorization.

444121313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93774.

The product of its digits is 1152, while the sum is 23.

The square root of 444121313 is about 21074.1859392006. The cubic root of 444121313 is about 762.9578369459.

Adding to 444121313 its reverse (313121444), we get a palindrome (757242757).

The spelling of 444121313 in words is "four hundred forty-four million, one hundred twenty-one thousand, three hundred thirteen".