144544405 has 8 divisors (see below), whose sum is σ = 174559032. Its totient is φ = 114898368.

The previous prime is 144544399. The next prime is 144544423. The reversal of 144544405 is 504445441.

It can be written as a sum of positive squares in 4 ways, for example, as 19864849 + 124679556 = 4457^2 + 11166^2 .

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 144544405 - 2¹³ = 144536213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 91282 + ... + 92851.

It is an arithmetic number, because the mean of its divisors is an integer number (21819879).

Almost surely, 2^144544405 is an apocalyptic number.

It is an amenable number.

144544405 is a deficient number, since it is larger than the sum of its proper divisors (30014627).

144544405 is a wasteful number, since it uses less digits than its factorization.

144544405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184295.

The product of its (nonzero) digits is 25600, while the sum is 31.

The square root of 144544405 is about 12022.6621428035. The cubic root of 144544405 is about 524.8079781503.

Adding to 144544405 its reverse (504445441), we get a palindrome (648989846).

The spelling of 144544405 in words is "one hundred forty-four million, five hundred forty-four thousand, four hundred five".