329428717 has 2 divisors, whose sum is σ = 329428718. Its totient is φ = 329428716.

The previous prime is 329428699. The next prime is 329428733. The reversal of 329428717 is 717824923.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328733161 + 695556 = 18131^2 + 834^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-329428717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (329428417) 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, 164714358 + 164714359.

It is an arithmetic number, because the mean of its divisors is an integer number (164714359).

Almost surely, 2^329428717 is an apocalyptic number.

It is an amenable number.

329428717 is a deficient number, since it is larger than the sum of its proper divisors (1).

329428717 is an equidigital number, since it uses as much as digits as its factorization.

329428717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 43.

The square root of 329428717 is about 18150.1712664096. The cubic root of 329428717 is about 690.6433242533.

The spelling of 329428717 in words is "three hundred twenty-nine million, four hundred twenty-eight thousand, seven hundred seventeen".