328959889 has 2 divisors, whose sum is σ = 328959890. Its totient is φ = 328959888.

The previous prime is 328959887. The next prime is 328959893. The reversal of 328959889 is 988959823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198246400 + 130713489 = 14080^2 + 11433^2 .

It is a cyclic number.

It is not a de Polignac number, because 328959889 - 2¹ = 328959887 is a prime.

Together with 328959887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (328959881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164479944 + 164479945.

It is an arithmetic number, because the mean of its divisors is an integer number (164479945).

Almost surely, 2^328959889 is an apocalyptic number.

It is an amenable number.

328959889 is a deficient number, since it is larger than the sum of its proper divisors (1).

328959889 is an equidigital number, since it uses as much as digits as its factorization.

328959889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11197440, while the sum is 61.

The square root of 328959889 is about 18137.2514180071. The cubic root of 328959889 is about 690.3155379617.

The spelling of 328959889 in words is "three hundred twenty-eight million, nine hundred fifty-nine thousand, eight hundred eighty-nine".