144730393 has 2 divisors, whose sum is σ = 144730394. Its totient is φ = 144730392.

The previous prime is 144730357. The next prime is 144730409. The reversal of 144730393 is 393037441.

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., 139310809 + 5419584 = 11803^2 + 2328^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144730393 is a prime.

It is not a weakly prime, because it can be changed into another prime (144730093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72365196 + 72365197.

It is an arithmetic number, because the mean of its divisors is an integer number (72365197).

Almost surely, 2^144730393 is an apocalyptic number.

It is an amenable number.

144730393 is a deficient number, since it is larger than the sum of its proper divisors (1).

144730393 is an equidigital number, since it uses as much as digits as its factorization.

144730393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 144730393 is about 12030.3945488084. The cubic root of 144730393 is about 525.0329751019.

The spelling of 144730393 in words is "one hundred forty-four million, seven hundred thirty thousand, three hundred ninety-three".