144038689 has 2 divisors, whose sum is σ = 144038690. Its totient is φ = 144038688.

The previous prime is 144038641. The next prime is 144038693. The reversal of 144038689 is 986830441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89397025 + 54641664 = 9455^2 + 7392^2 .

It is a cyclic number.

It is not a de Polignac number, because 144038689 - 2¹⁹ = 143514401 is a prime.

It is not a weakly prime, because it can be changed into another prime (144038189) 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, 72019344 + 72019345.

It is an arithmetic number, because the mean of its divisors is an integer number (72019345).

Almost surely, 2^144038689 is an apocalyptic number.

It is an amenable number.

144038689 is a deficient number, since it is larger than the sum of its proper divisors (1).

144038689 is an equidigital number, since it uses as much as digits as its factorization.

144038689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 144038689 is about 12001.6119334029. The cubic root of 144038689 is about 524.1952162420.

The spelling of 144038689 in words is "one hundred forty-four million, thirty-eight thousand, six hundred eighty-nine".