144289909 has 2 divisors, whose sum is σ = 144289910. Its totient is φ = 144289908.

The previous prime is 144289867. The next prime is 144289997. The reversal of 144289909 is 909982441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118330884 + 25959025 = 10878^2 + 5095^2 .

It is a cyclic number.

It is not a de Polignac number, because 144289909 - 2¹¹ = 144287861 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 (144289009) by changing a digit.

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 as a sum of consecutive naturals, namely, 72144954 + 72144955.

It is an arithmetic number, because the mean of its divisors is an integer number (72144955).

Almost surely, 2^144289909 is an apocalyptic number.

It is an amenable number.

144289909 is a deficient number, since it is larger than the sum of its proper divisors (1).

144289909 is an equidigital number, since it uses as much as digits as its factorization.

144289909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 144289909 is about 12012.0734679738. The cubic root of 144289909 is about 524.4997914396.

The spelling of 144289909 in words is "one hundred forty-four million, two hundred eighty-nine thousand, nine hundred nine".