144444321 has 12 divisors (see below), whose sum is σ = 238447872. Its totient is φ = 82539576.

The previous prime is 144444299. The next prime is 144444343. The reversal of 144444321 is 123444441.

It is an interprime number because it is at equal distance from previous prime (144444299) and next prime (144444343).

It is not a de Polignac number, because 144444321 - 2⁷ = 144444193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (144444361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1146321 + ... + 1146446.

It is an arithmetic number, because the mean of its divisors is an integer number (19870656).

Almost surely, 2^144444321 is an apocalyptic number.

It is an amenable number.

144444321 is a deficient number, since it is larger than the sum of its proper divisors (94003551).

144444321 is a wasteful number, since it uses less digits than its factorization.

144444321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292780 (or 2292777 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 144444321 is about 12018.4991159462. The cubic root of 144444321 is about 524.6868227419.

Adding to 144444321 its reverse (123444441), we get a palindrome (267888762).

It can be divided in two parts, 1444443 and 21, that multiplied together give a palindrome (30333303).

The spelling of 144444321 in words is "one hundred forty-four million, four hundred forty-four thousand, three hundred twenty-one".