8639413 has 2 divisors, whose sum is σ = 8639414. Its totient is φ = 8639412.

The previous prime is 8639401. The next prime is 8639441. The reversal of 8639413 is 3149368.

8639413 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8631844 + 7569 = 2938^2 + 87^2 .

It is a cyclic number.

It is not a de Polignac number, because 8639413 - 2⁵ = 8639381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8639443) 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, 4319706 + 4319707.

It is an arithmetic number, because the mean of its divisors is an integer number (4319707).

Almost surely, 2^8639413 is an apocalyptic number.

It is an amenable number.

8639413 is a deficient number, since it is larger than the sum of its proper divisors (1).

8639413 is an equidigital number, since it uses as much as digits as its factorization.

8639413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 34.

The square root of 8639413 is about 2939.2878389161. The cubic root of 8639413 is about 205.1924664780.

The spelling of 8639413 in words is "eight million, six hundred thirty-nine thousand, four hundred thirteen".