9942108439 has 2 divisors, whose sum is σ = 9942108440. Its totient is φ = 9942108438.

The previous prime is 9942108431. The next prime is 9942108499. The reversal of 9942108439 is 9348012499.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9942108439 - 2³ = 9942108431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9942108392 and 9942108401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9942108431) 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, 4971054219 + 4971054220.

It is an arithmetic number, because the mean of its divisors is an integer number (4971054220).

Almost surely, 2^9942108439 is an apocalyptic number.

9942108439 is a deficient number, since it is larger than the sum of its proper divisors (1).

9942108439 is an equidigital number, since it uses as much as digits as its factorization.

9942108439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 9942108439 is about 99710.1220488672. The cubic root of 9942108439 is about 2150.2691885053.

The spelling of 9942108439 in words is "nine billion, nine hundred forty-two million, one hundred eight thousand, four hundred thirty-nine".