144730709 has 2 divisors, whose sum is σ = 144730710. Its totient is φ = 144730708.

The previous prime is 144730687. The next prime is 144730711. The reversal of 144730709 is 907037441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117115684 + 27615025 = 10822^2 + 5255^2 .

It is a cyclic number.

It is not a de Polignac number, because 144730709 - 2¹⁶ = 144665173 is a prime.

Together with 144730711, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144730769) 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 as a sum of consecutive naturals, namely, 72365354 + 72365355.

It is an arithmetic number, because the mean of its divisors is an integer number (72365355).

Almost surely, 2^144730709 is an apocalyptic number.

It is an amenable number.

144730709 is a deficient number, since it is larger than the sum of its proper divisors (1).

144730709 is an equidigital number, since it uses as much as digits as its factorization.

144730709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 144730709 is about 12030.4076822026. The cubic root of 144730709 is about 525.0333572154.

The spelling of 144730709 in words is "one hundred forty-four million, seven hundred thirty thousand, seven hundred nine".