144948809 has 2 divisors, whose sum is σ = 144948810. Its totient is φ = 144948808.

The previous prime is 144948787. The next prime is 144948821. The reversal of 144948809 is 908849441.

144948809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144841225 + 107584 = 12035^2 + 328^2 .

It is an emirp because it is prime and its reverse (908849441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144948809 is a prime.

It is not a weakly prime, because it can be changed into another prime (144948889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72474404 + 72474405.

It is an arithmetic number, because the mean of its divisors is an integer number (72474405).

Almost surely, 2^144948809 is an apocalyptic number.

It is an amenable number.

144948809 is a deficient number, since it is larger than the sum of its proper divisors (1).

144948809 is an equidigital number, since it uses as much as digits as its factorization.

144948809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 144948809 is about 12039.4688005742. The cubic root of 144948809 is about 525.2969555087.

The spelling of 144948809 in words is "one hundred forty-four million, nine hundred forty-eight thousand, eight hundred nine".