441444145 has 8 divisors (see below), whose sum is σ = 529846056. Its totient is φ = 353079936.

The previous prime is 441444139. The next prime is 441444161. The reversal of 441444145 is 541444144.

It can be written as a sum of positive squares in 4 ways, for example, as 223113969 + 218330176 = 14937^2 + 14776^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 441444145 - 2²⁷ = 307226417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38499 + ... + 48631.

It is an arithmetic number, because the mean of its divisors is an integer number (66230757).

Almost surely, 2^441444145 is an apocalyptic number.

It is an amenable number.

441444145 is a deficient number, since it is larger than the sum of its proper divisors (88401911).

441444145 is a wasteful number, since it uses less digits than its factorization.

441444145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18851.

The product of its digits is 20480, while the sum is 31.

The square root of 441444145 is about 21010.5722197183. The cubic root of 441444145 is about 761.4217068764.

Adding to 441444145 its reverse (541444144), we get a palindrome (982888289).

Subtracting 441444145 from its reverse (541444144), we obtain a palindrome (99999999).

The spelling of 441444145 in words is "four hundred forty-one million, four hundred forty-four thousand, one hundred forty-five".