13398247 has 2 divisors, whose sum is σ = 13398248. Its totient is φ = 13398246.

The previous prime is 13398233. The next prime is 13398257. The reversal of 13398247 is 74289331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13398247 - 2¹⁵ = 13365479 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13398257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6699123 + 6699124.

It is an arithmetic number, because the mean of its divisors is an integer number (6699124).

Almost surely, 2^13398247 is an apocalyptic number.

13398247 is a deficient number, since it is larger than the sum of its proper divisors (1).

13398247 is an equidigital number, since it uses as much as digits as its factorization.

13398247 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 13398247 is about 3660.3615941598. The cubic root of 13398247 is about 237.5104157944.

The spelling of 13398247 in words is "thirteen million, three hundred ninety-eight thousand, two hundred forty-seven".