8458139 has 2 divisors, whose sum is σ = 8458140. Its totient is φ = 8458138.

The previous prime is 8458123. The next prime is 8458141. The reversal of 8458139 is 9318548.

8458139 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 8458139 - 2⁴ = 8458123 is a prime.

Together with 8458141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8458189) 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, 4229069 + 4229070.

It is an arithmetic number, because the mean of its divisors is an integer number (4229070).

Almost surely, 2^8458139 is an apocalyptic number.

8458139 is a deficient number, since it is larger than the sum of its proper divisors (1).

8458139 is an equidigital number, since it uses as much as digits as its factorization.

8458139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 38.

The square root of 8458139 is about 2908.2879843647. The cubic root of 8458139 is about 203.7471797570.

The spelling of 8458139 in words is "eight million, four hundred fifty-eight thousand, one hundred thirty-nine".