144726773 has 2 divisors, whose sum is σ = 144726774. Its totient is φ = 144726772.

The previous prime is 144726731. The next prime is 144726793. The reversal of 144726773 is 377627441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132181009 + 12545764 = 11497^2 + 3542^2 .

It is an emirp because it is prime and its reverse (377627441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144726773 is a prime.

It is a Sophie Germain 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 144726773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144726793) 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, 72363386 + 72363387.

It is an arithmetic number, because the mean of its divisors is an integer number (72363387).

Almost surely, 2^144726773 is an apocalyptic number.

It is an amenable number.

144726773 is a deficient number, since it is larger than the sum of its proper divisors (1).

144726773 is an equidigital number, since it uses as much as digits as its factorization.

144726773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 197568, while the sum is 41.

The square root of 144726773 is about 12030.2440956117. The cubic root of 144726773 is about 525.0285976863.

The spelling of 144726773 in words is "one hundred forty-four million, seven hundred twenty-six thousand, seven hundred seventy-three".