13328993 has 2 divisors, whose sum is σ = 13328994. Its totient is φ = 13328992.

The previous prime is 13328981. The next prime is 13329007. The reversal of 13328993 is 39982331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11607649 + 1721344 = 3407^2 + 1312^2 .

It is a cyclic number.

It is not a de Polignac number, because 13328993 - 2⁶ = 13328929 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13321993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6664496 + 6664497.

It is an arithmetic number, because the mean of its divisors is an integer number (6664497).

Almost surely, 2^13328993 is an apocalyptic number.

It is an amenable number.

13328993 is a deficient number, since it is larger than the sum of its proper divisors (1).

13328993 is an equidigital number, since it uses as much as digits as its factorization.

13328993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 38.

The square root of 13328993 is about 3650.8893437079. The cubic root of 13328993 is about 237.1004873359.

The spelling of 13328993 in words is "thirteen million, three hundred twenty-eight thousand, nine hundred ninety-three".