9913439 has 2 divisors, whose sum is σ = 9913440. Its totient is φ = 9913438.

The previous prime is 9913433. The next prime is 9913469. The reversal of 9913439 is 9343199.

It is a weak prime.

It is an emirp because it is prime and its reverse (9343199) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9913439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9913433) 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, 4956719 + 4956720.

It is an arithmetic number, because the mean of its divisors is an integer number (4956720).

Almost surely, 2^9913439 is an apocalyptic number.

9913439 is a deficient number, since it is larger than the sum of its proper divisors (1).

9913439 is an equidigital number, since it uses as much as digits as its factorization.

9913439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26244, while the sum is 38.

The square root of 9913439 is about 3148.5614175366. The cubic root of 9913439 is about 214.8200332833.

The spelling of 9913439 in words is "nine million, nine hundred thirteen thousand, four hundred thirty-nine".