9959239938439 has 16 divisors (see below), whose sum is σ = 11044801658880. Its totient is φ = 8903763180000.

The previous prime is 9959239938407. The next prime is 9959239938443. The reversal of 9959239938439 is 9348399329599.

It is a happy number.

9959239938439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9959239938439 - 2⁵ = 9959239938407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9959239938469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2203642 + ... + 4977400.

It is an arithmetic number, because the mean of its divisors is an integer number (690300103680).

Almost surely, 2^{9959239938439} is an apocalyptic number.

9959239938439 is a deficient number, since it is larger than the sum of its proper divisors (1085561720441).

9959239938439 is a wasteful number, since it uses less digits than its factorization.

9959239938439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779182.

The product of its digits is 4591650240, while the sum is 82.

The spelling of 9959239938439 in words is "nine trillion, nine hundred fifty-nine billion, two hundred thirty-nine million, nine hundred thirty-eight thousand, four hundred thirty-nine".