328819969 has 2 divisors, whose sum is σ = 328819970. Its totient is φ = 328819968.

The previous prime is 328819961. The next prime is 328819993. The reversal of 328819969 is 969918823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176544369 + 152275600 = 13287^2 + 12340^2 .

It is an emirp because it is prime and its reverse (969918823) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 328819969 - 2³ = 328819961 is a prime.

It is a super-2 number, since 2×328819969² = 216245144026321922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (328819961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164409984 + 164409985.

It is an arithmetic number, because the mean of its divisors is an integer number (164409985).

Almost surely, 2^328819969 is an apocalyptic number.

It is an amenable number.

328819969 is a deficient number, since it is larger than the sum of its proper divisors (1).

328819969 is an equidigital number, since it uses as much as digits as its factorization.

328819969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 55.

The square root of 328819969 is about 18133.3937529631. The cubic root of 328819969 is about 690.2176510045.

The spelling of 328819969 in words is "three hundred twenty-eight million, eight hundred nineteen thousand, nine hundred sixty-nine".