9678117384 has 128 divisors (see below), whose sum is σ = 28985040000. Its totient is φ = 2974447872.

The previous prime is 9678117373. The next prime is 9678117389. The reversal of 9678117384 is 4837118769.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 9678117384.

It is not an unprimeable number, because it can be changed into a prime (9678117389) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3584467 + ... + 3587165.

It is an arithmetic number, because the mean of its divisors is an integer number (226445625).

Almost surely, 2^9678117384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9678117384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14492520000).

9678117384 is an abundant number, since it is smaller than the sum of its proper divisors (19306922616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9678117384 is a wasteful number, since it uses less digits than its factorization.

9678117384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4004 (or 3994 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 9678117384 is about 98377.4231416945. The cubic root of 9678117384 is about 2131.0663020533.

The spelling of 9678117384 in words is "nine billion, six hundred seventy-eight million, one hundred seventeen thousand, three hundred eighty-four".