328959893 has 2 divisors, whose sum is σ = 328959894. Its totient is φ = 328959892.

The previous prime is 328959889. The next prime is 328959907. The reversal of 328959893 is 398959823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178970884 + 149989009 = 13378^2 + 12247^2 .

It is an emirp because it is prime and its reverse (398959823) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 328959893 - 2² = 328959889 is a prime.

It is a super-2 number, since 2×328959893² = 216429222405142898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328959853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164479946 + 164479947.

It is an arithmetic number, because the mean of its divisors is an integer number (164479947).

Almost surely, 2^328959893 is an apocalyptic number.

It is an amenable number.

328959893 is a deficient number, since it is larger than the sum of its proper divisors (1).

328959893 is an equidigital number, since it uses as much as digits as its factorization.

328959893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 56.

The square root of 328959893 is about 18137.2515282774. The cubic root of 328959893 is about 690.3155407597.

The spelling of 328959893 in words is "three hundred twenty-eight million, nine hundred fifty-nine thousand, eight hundred ninety-three".