144478429 has 2 divisors, whose sum is σ = 144478430. Its totient is φ = 144478428.

The previous prime is 144478403. The next prime is 144478441. The reversal of 144478429 is 924874441.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98604900 + 45873529 = 9930^2 + 6773^2 .

It is a cyclic number.

It is not a de Polignac number, because 144478429 - 2¹⁹ = 143954141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144478469) 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, 72239214 + 72239215.

It is an arithmetic number, because the mean of its divisors is an integer number (72239215).

Almost surely, 2^144478429 is an apocalyptic number.

It is an amenable number.

144478429 is a deficient number, since it is larger than the sum of its proper divisors (1).

144478429 is an equidigital number, since it uses as much as digits as its factorization.

144478429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 43.

The square root of 144478429 is about 12019.9180113676. The cubic root of 144478429 is about 524.7281180304.

The spelling of 144478429 in words is "one hundred forty-four million, four hundred seventy-eight thousand, four hundred twenty-nine".