328428520939 has 2 divisors, whose sum is σ = 328428520940. Its totient is φ = 328428520938.

The previous prime is 328428520909. The next prime is 328428520963. The reversal of 328428520939 is 939025824823.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 328428520939 - 2²³ = 328420132331 is a prime.

It is a super-2 number, since 2×328428520939² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 328428520939.

It is not a weakly prime, because it can be changed into another prime (328428520909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164214260469 + 164214260470.

It is an arithmetic number, because the mean of its divisors is an integer number (164214260470).

Almost surely, 2^328428520939 is an apocalyptic number.

328428520939 is a deficient number, since it is larger than the sum of its proper divisors (1).

328428520939 is an equidigital number, since it uses as much as digits as its factorization.

328428520939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 328428520939 in words is "three hundred twenty-eight billion, four hundred twenty-eight million, five hundred twenty thousand, nine hundred thirty-nine".