1297973 has 2 divisors, whose sum is σ = 1297974. Its totient is φ = 1297972.

The previous prime is 1297963. The next prime is 1297979. The reversal of 1297973 is 3797921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 669124 + 628849 = 818^2 + 793^2 .

It is a cyclic number.

It is not a de Polignac number, because 1297973 - 2¹⁰ = 1296949 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1297979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648986 + 648987.

It is an arithmetic number, because the mean of its divisors is an integer number (648987).

2^1297973 is an apocalyptic number.

It is an amenable number.

1297973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297973 is an equidigital number, since it uses as much as digits as its factorization.

1297973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23814, while the sum is 38.

The square root of 1297973 is about 1139.2861800268. The cubic root of 1297973 is about 109.0825343529.

The spelling of 1297973 in words is "one million, two hundred ninety-seven thousand, nine hundred seventy-three".