144404221 has 8 divisors (see below), whose sum is σ = 155872640. Its totient is φ = 132987312.

The previous prime is 144404219. The next prime is 144404233. The reversal of 144404221 is 122404441.

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 144404221 - 2¹ = 144404219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144404192 and 144404201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144404251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6945 + ... + 18358.

It is an arithmetic number, because the mean of its divisors is an integer number (19484080).

Almost surely, 2^144404221 is an apocalyptic number.

It is an amenable number.

144404221 is a deficient number, since it is larger than the sum of its proper divisors (11468419).

144404221 is a wasteful number, since it uses less digits than its factorization.

144404221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25755.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 144404221 is about 12016.8307385933. The cubic root of 144404221 is about 524.6382644953.

Adding to 144404221 its reverse (122404441), we get a palindrome (266808662).

The spelling of 144404221 in words is "one hundred forty-four million, four hundred four thousand, two hundred twenty-one".