13247893 has 2 divisors, whose sum is σ = 13247894. Its totient is φ = 13247892.

The previous prime is 13247873. The next prime is 13247903. The reversal of 13247893 is 39874231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8892324 + 4355569 = 2982^2 + 2087^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13247893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13247803) 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, 6623946 + 6623947.

It is an arithmetic number, because the mean of its divisors is an integer number (6623947).

Almost surely, 2^13247893 is an apocalyptic number.

It is an amenable number.

13247893 is a deficient number, since it is larger than the sum of its proper divisors (1).

13247893 is an equidigital number, since it uses as much as digits as its factorization.

13247893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 13247893 is about 3639.7655144253. The cubic root of 13247893 is about 236.6186309528.

The spelling of 13247893 in words is "thirteen million, two hundred forty-seven thousand, eight hundred ninety-three".