1297441009 has 2 divisors, whose sum is σ = 1297441010. Its totient is φ = 1297441008.

The previous prime is 1297440979. The next prime is 1297441039. The reversal of 1297441009 is 9001447921.

It is a balanced prime because it is at equal distance from previous prime (1297440979) and next prime (1297441039).

It can be written as a sum of positive squares in only one way, i.e., 763969600 + 533471409 = 27640^2 + 23097^2 .

It is an emirp because it is prime and its reverse (9001447921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1297441009 - 2⁹ = 1297440497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1297441039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648720504 + 648720505.

It is an arithmetic number, because the mean of its divisors is an integer number (648720505).

Almost surely, 2^1297441009 is an apocalyptic number.

It is an amenable number.

1297441009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297441009 is an equidigital number, since it uses as much as digits as its factorization.

1297441009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 1297441009 is about 36020.0084536359. The cubic root of 1297441009 is about 1090.6762935446.

The spelling of 1297441009 in words is "one billion, two hundred ninety-seven million, four hundred forty-one thousand, nine".