328239293 has 2 divisors, whose sum is σ = 328239294. Its totient is φ = 328239292.

The previous prime is 328239287. The next prime is 328239311. The reversal of 328239293 is 392932823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311240164 + 16999129 = 17642^2 + 4123^2 .

It is a cyclic number.

It is not a de Polignac number, because 328239293 - 2⁴ = 328239277 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 328239293.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328232293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164119646 + 164119647.

It is an arithmetic number, because the mean of its divisors is an integer number (164119647).

Almost surely, 2^328239293 is an apocalyptic number.

It is an amenable number.

328239293 is a deficient number, since it is larger than the sum of its proper divisors (1).

328239293 is an equidigital number, since it uses as much as digits as its factorization.

328239293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 41.

The square root of 328239293 is about 18117.3754445836. The cubic root of 328239293 is about 689.8111175217.

The spelling of 328239293 in words is "three hundred twenty-eight million, two hundred thirty-nine thousand, two hundred ninety-three".