1297753469 has 2 divisors, whose sum is σ = 1297753470. Its totient is φ = 1297753468.

The previous prime is 1297753427. The next prime is 1297753477. The reversal of 1297753469 is 9643577921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1236366244 + 61387225 = 35162^2 + 7835^2 .

It is an emirp because it is prime and its reverse (9643577921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1297753469 - 2²⁴ = 1280976253 is a prime.

It is a super-2 number, since 2×1297753469² = 3368328132603067922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1297753469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1297753069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648876734 + 648876735.

It is an arithmetic number, because the mean of its divisors is an integer number (648876735).

Almost surely, 2^1297753469 is an apocalyptic number.

It is an amenable number.

1297753469 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297753469 is an equidigital number, since it uses as much as digits as its factorization.

1297753469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2857680, while the sum is 53.

The square root of 1297753469 is about 36024.3455041171. The cubic root of 1297753469 is about 1090.7638416126.

The spelling of 1297753469 in words is "one billion, two hundred ninety-seven million, seven hundred fifty-three thousand, four hundred sixty-nine".