13385947 has 2 divisors, whose sum is σ = 13385948. Its totient is φ = 13385946.

The previous prime is 13385941. The next prime is 13385951. The reversal of 13385947 is 74958331.

13385947 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13385947 - 2⁷ = 13385819 is a prime.

It is not a weakly prime, because it can be changed into another prime (13385941) 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, 6692973 + 6692974.

It is an arithmetic number, because the mean of its divisors is an integer number (6692974).

Almost surely, 2^13385947 is an apocalyptic number.

13385947 is a deficient number, since it is larger than the sum of its proper divisors (1).

13385947 is an equidigital number, since it uses as much as digits as its factorization.

13385947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The square root of 13385947 is about 3658.6810464975. The cubic root of 13385947 is about 237.4377129365.

The spelling of 13385947 in words is "thirteen million, three hundred eighty-five thousand, nine hundred forty-seven".