1317009439 has 2 divisors, whose sum is σ = 1317009440. Its totient is φ = 1317009438.

The previous prime is 1317009403. The next prime is 1317009481. The reversal of 1317009439 is 9349007131.

It is a weak prime.

It is an emirp because it is prime and its reverse (9349007131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1317009439 - 2⁷ = 1317009311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1317009398 and 1317009407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1317009139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658504719 + 658504720.

It is an arithmetic number, because the mean of its divisors is an integer number (658504720).

Almost surely, 2^1317009439 is an apocalyptic number.

1317009439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317009439 is an equidigital number, since it uses as much as digits as its factorization.

1317009439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 1317009439 is about 36290.6246708430. The cubic root of 1317009439 is about 1096.1322674898.

The spelling of 1317009439 in words is "one billion, three hundred seventeen million, nine thousand, four hundred thirty-nine".