8342139439 has 2 divisors, whose sum is σ = 8342139440. Its totient is φ = 8342139438.

The previous prime is 8342139433. The next prime is 8342139457. The reversal of 8342139439 is 9349312438.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8342139439 - 2¹⁵ = 8342106671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8342139433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4171069719 + 4171069720.

It is an arithmetic number, because the mean of its divisors is an integer number (4171069720).

Almost surely, 2^8342139439 is an apocalyptic number.

8342139439 is a deficient number, since it is larger than the sum of its proper divisors (1).

8342139439 is an equidigital number, since it uses as much as digits as its factorization.

8342139439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 46.

The square root of 8342139439 is about 91335.3132090759. The cubic root of 8342139439 is about 2028.1145539664.

The spelling of 8342139439 in words is "eight billion, three hundred forty-two million, one hundred thirty-nine thousand, four hundred thirty-nine".