13993513 has 2 divisors, whose sum is σ = 13993514. Its totient is φ = 13993512.

The previous prime is 13993489. The next prime is 13993517. The reversal of 13993513 is 31539931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11471769 + 2521744 = 3387^2 + 1588^2 .

It is an emirp because it is prime and its reverse (31539931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13993513 - 2¹⁷ = 13862441 is a prime.

It is not a weakly prime, because it can be changed into another prime (13993517) 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, 6996756 + 6996757.

It is an arithmetic number, because the mean of its divisors is an integer number (6996757).

Almost surely, 2^13993513 is an apocalyptic number.

It is an amenable number.

13993513 is a deficient number, since it is larger than the sum of its proper divisors (1).

13993513 is an equidigital number, since it uses as much as digits as its factorization.

13993513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10935, while the sum is 34.

The square root of 13993513 is about 3740.7904244959. The cubic root of 13993513 is about 240.9769954454.

The spelling of 13993513 in words is "thirteen million, nine hundred ninety-three thousand, five hundred thirteen".