144907729 has 2 divisors, whose sum is σ = 144907730. Its totient is φ = 144907728.

The previous prime is 144907727. The next prime is 144907771. The reversal of 144907729 is 927709441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76597504 + 68310225 = 8752^2 + 8265^2 .

It is a cyclic number.

It is not a de Polignac number, because 144907729 - 2¹ = 144907727 is a prime.

Together with 144907727, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (144907723) 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, 72453864 + 72453865.

It is an arithmetic number, because the mean of its divisors is an integer number (72453865).

Almost surely, 2^144907729 is an apocalyptic number.

It is an amenable number.

144907729 is a deficient number, since it is larger than the sum of its proper divisors (1).

144907729 is an equidigital number, since it uses as much as digits as its factorization.

144907729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 144907729 is about 12037.7626243418. The cubic root of 144907729 is about 525.2473259464.

The spelling of 144907729 in words is "one hundred forty-four million, nine hundred seven thousand, seven hundred twenty-nine".