144377729 has 2 divisors, whose sum is σ = 144377730. Its totient is φ = 144377728.

The previous prime is 144377711. The next prime is 144377731. The reversal of 144377729 is 927773441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96491329 + 47886400 = 9823^2 + 6920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144377729 is a prime.

It is a Sophie Germain prime.

Together with 144377731, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 144377729.

It is not a weakly prime, because it can be changed into another prime (144377759) 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, 72188864 + 72188865.

It is an arithmetic number, because the mean of its divisors is an integer number (72188865).

Almost surely, 2^144377729 is an apocalyptic number.

It is an amenable number.

144377729 is a deficient number, since it is larger than the sum of its proper divisors (1).

144377729 is an equidigital number, since it uses as much as digits as its factorization.

144377729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 296352, while the sum is 44.

The square root of 144377729 is about 12015.7284007254. The cubic root of 144377729 is about 524.6061796369.

The spelling of 144377729 in words is "one hundred forty-four million, three hundred seventy-seven thousand, seven hundred twenty-nine".