1316729 has 2 divisors, whose sum is σ = 1316730. Its totient is φ = 1316728.

The previous prime is 1316717. The next prime is 1316741. The reversal of 1316729 is 9276131.

It is a balanced prime because it is at equal distance from previous prime (1316717) and next prime (1316741).

It can be written as a sum of positive squares in only one way, i.e., 769129 + 547600 = 877^2 + 740^2 .

It is a cyclic number.

It is not a de Polignac number, because 1316729 - 2²⁰ = 268153 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1316779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658364 + 658365.

It is an arithmetic number, because the mean of its divisors is an integer number (658365).

2^1316729 is an apocalyptic number.

It is an amenable number.

1316729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316729 is an equidigital number, since it uses as much as digits as its factorization.

1316729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 29.

The square root of 1316729 is about 1147.4881263002. The cubic root of 1316729 is about 109.6054459883.

The spelling of 1316729 in words is "one million, three hundred sixteen thousand, seven hundred twenty-nine".