328259993 has 2 divisors, whose sum is σ = 328259994. Its totient is φ = 328259992.

The previous prime is 328259983. The next prime is 328260029. The reversal of 328259993 is 399952823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 304572304 + 23687689 = 17452^2 + 4867^2 .

It is a cyclic number.

It is not a de Polignac number, because 328259993 - 2²⁴ = 311482777 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (328259923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164129996 + 164129997.

It is an arithmetic number, because the mean of its divisors is an integer number (164129997).

Almost surely, 2^328259993 is an apocalyptic number.

It is an amenable number.

328259993 is a deficient number, since it is larger than the sum of its proper divisors (1).

328259993 is an equidigital number, since it uses as much as digits as its factorization.

328259993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 50.

The square root of 328259993 is about 18117.9467103753. The cubic root of 328259993 is about 689.8256179083.

The spelling of 328259993 in words is "three hundred twenty-eight million, two hundred fifty-nine thousand, nine hundred ninety-three".