13320493 has 2 divisors, whose sum is σ = 13320494. Its totient is φ = 13320492.

The previous prime is 13320491. The next prime is 13320521. The reversal of 13320493 is 39402331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11309769 + 2010724 = 3363^2 + 1418^2 .

It is an emirp because it is prime and its reverse (39402331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13320493 - 2¹ = 13320491 is a prime.

Together with 13320491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13320491) 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, 6660246 + 6660247.

It is an arithmetic number, because the mean of its divisors is an integer number (6660247).

Almost surely, 2^13320493 is an apocalyptic number.

It is an amenable number.

13320493 is a deficient number, since it is larger than the sum of its proper divisors (1).

13320493 is an equidigital number, since it uses as much as digits as its factorization.

13320493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 13320493 is about 3649.7250581379. The cubic root of 13320493 is about 237.0500763585.

The spelling of 13320493 in words is "thirteen million, three hundred twenty thousand, four hundred ninety-three".