9878668789 has 8 divisors (see below), whose sum is σ = 10833154560. Its totient is φ = 8933587200.

The previous prime is 9878668783. The next prime is 9878668823.

9878668789 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 9878668789 - 2¹⁵ = 9878636021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9878668783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2348844 + ... + 2353045.

It is an arithmetic number, because the mean of its divisors is an integer number (1354144320).

Almost surely, 2^9878668789 is an apocalyptic number.

It is an amenable number.

9878668789 is a deficient number, since it is larger than the sum of its proper divisors (954485771).

9878668789 is a wasteful number, since it uses less digits than its factorization.

9878668789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4702091.

The product of its digits is 585252864, while the sum is 76.

The square root of 9878668789 is about 99391.4925383456. The cubic root of 9878668789 is about 2145.6858715559.

The spelling of 9878668789 in words is "nine billion, eight hundred seventy-eight million, six hundred sixty-eight thousand, seven hundred eighty-nine".