1440317 has 2 divisors, whose sum is σ = 1440318. Its totient is φ = 1440316.

The previous prime is 1440301. The next prime is 1440349. The reversal of 1440317 is 7130441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1038361 + 401956 = 1019^2 + 634^2 .

It is an emirp because it is prime and its reverse (7130441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1440317 - 2⁴ = 1440301 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720158 + 720159.

It is an arithmetic number, because the mean of its divisors is an integer number (720159).

2^1440317 is an apocalyptic number.

It is an amenable number.

1440317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440317 is an equidigital number, since it uses as much as digits as its factorization.

1440317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 1440317 is about 1200.1320760650. The cubic root of 1440317 is about 112.9326092028.

Adding to 1440317 its reverse (7130441), we get a palindrome (8570758).

The spelling of 1440317 in words is "one million, four hundred forty thousand, three hundred seventeen".