144317689 has 2 divisors, whose sum is σ = 144317690. Its totient is φ = 144317688.

The previous prime is 144317687. The next prime is 144317759. The reversal of 144317689 is 986713441.

144317689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130142464 + 14175225 = 11408^2 + 3765^2 .

It is a cyclic number.

It is not a de Polignac number, because 144317689 - 2¹ = 144317687 is a prime.

Together with 144317687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (144317681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72158844 + 72158845.

It is an arithmetic number, because the mean of its divisors is an integer number (72158845).

Almost surely, 2^144317689 is an apocalyptic number.

It is an amenable number.

144317689 is a deficient number, since it is larger than the sum of its proper divisors (1).

144317689 is an equidigital number, since it uses as much as digits as its factorization.

144317689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 144317689 is about 12013.2297489060. The cubic root of 144317689 is about 524.5334497629.

The spelling of 144317689 in words is "one hundred forty-four million, three hundred seventeen thousand, six hundred eighty-nine".