1329397 has 2 divisors, whose sum is σ = 1329398. Its totient is φ = 1329396.

The previous prime is 1329379. The next prime is 1329407. The reversal of 1329397 is 7939231.

Together with previous prime (1329379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1274641 + 54756 = 1129^2 + 234^2 .

It is a cyclic number.

It is not a de Polignac number, because 1329397 - 2⁷ = 1329269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1329337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664698 + 664699.

It is an arithmetic number, because the mean of its divisors is an integer number (664699).

2^1329397 is an apocalyptic number.

It is an amenable number.

1329397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1329397 is an equidigital number, since it uses as much as digits as its factorization.

1329397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10206, while the sum is 34.

The square root of 1329397 is about 1152.9947961721. The cubic root of 1329397 is about 109.9558224805.

The spelling of 1329397 in words is "one million, three hundred twenty-nine thousand, three hundred ninety-seven".