1329457 has 2 divisors, whose sum is σ = 1329458. Its totient is φ = 1329456.

The previous prime is 1329439. The next prime is 1329479. The reversal of 1329457 is 7549231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 968256 + 361201 = 984^2 + 601^2 .

It is a cyclic number.

It is not a de Polignac number, because 1329457 - 2¹¹ = 1327409 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1329407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664728 + 664729.

It is an arithmetic number, because the mean of its divisors is an integer number (664729).

2^1329457 is an apocalyptic number.

It is an amenable number.

1329457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1329457 is an equidigital number, since it uses as much as digits as its factorization.

1329457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 1329457 is about 1153.0208150766. The cubic root of 1329457 is about 109.9574766766.

The spelling of 1329457 in words is "one million, three hundred twenty-nine thousand, four hundred fifty-seven".