1328904959 has 2 divisors, whose sum is σ = 1328904960. Its totient is φ = 1328904958.

The previous prime is 1328904937. The next prime is 1328904979. The reversal of 1328904959 is 9594098231.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9594098231) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1328904959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1328904979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664452479 + 664452480.

It is an arithmetic number, because the mean of its divisors is an integer number (664452480).

Almost surely, 2^1328904959 is an apocalyptic number.

1328904959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328904959 is an equidigital number, since it uses as much as digits as its factorization.

1328904959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 1328904959 is about 36454.1487213733. The cubic root of 1328904959 is about 1099.4225506377.

The spelling of 1328904959 in words is "one billion, three hundred twenty-eight million, nine hundred four thousand, nine hundred fifty-nine".