9878605879 has 8 divisors (see below), whose sum is σ = 9978515568. Its totient is φ = 9778737600.

The previous prime is 9878605859. The next prime is 9878605901. The reversal of 9878605879 is 9785068789.

9878605879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9878605879 is a prime.

It is a super-2 number, since 2×9878605879² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9878605829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 742524 + ... + 755710.

It is an arithmetic number, because the mean of its divisors is an integer number (1247314446).

Almost surely, 2^9878605879 is an apocalyptic number.

9878605879 is a deficient number, since it is larger than the sum of its proper divisors (99909689).

9878605879 is a wasteful number, since it uses less digits than its factorization.

9878605879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20705.

The product of its (nonzero) digits is 60963840, while the sum is 67.

The square root of 9878605879 is about 99391.1760620630. The cubic root of 9878605879 is about 2145.6813167794.

The spelling of 9878605879 in words is "nine billion, eight hundred seventy-eight million, six hundred five thousand, eight hundred seventy-nine".