144144509 has 2 divisors, whose sum is σ = 144144510. Its totient is φ = 144144508.

The previous prime is 144144499. The next prime is 144144521. The reversal of 144144509 is 905441441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135792409 + 8352100 = 11653^2 + 2890^2 .

It is an emirp because it is prime and its reverse (905441441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144144509 - 2¹⁶ = 144078973 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144144589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72072254 + 72072255.

It is an arithmetic number, because the mean of its divisors is an integer number (72072255).

Almost surely, 2^144144509 is an apocalyptic number.

It is an amenable number.

144144509 is a deficient number, since it is larger than the sum of its proper divisors (1).

144144509 is an equidigital number, since it uses as much as digits as its factorization.

144144509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 144144509 is about 12006.0196984679. The cubic root of 144144509 is about 524.3235538891.

The spelling of 144144509 in words is "one hundred forty-four million, one hundred forty-four thousand, five hundred nine".