9878127246 has 96 divisors (see below), whose sum is σ = 25045063680. Its totient is φ = 2786529600.

The previous prime is 9878127221. The next prime is 9878127251. The reversal of 9878127246 is 6427218789.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 9878127192 and 9878127201.

It is a congruent number.

It is an unprimeable number.

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 in 47 ways as a sum of consecutive naturals, for example, 101991 + ... + 173661.

It is an arithmetic number, because the mean of its divisors is an integer number (260886080).

Almost surely, 2^9878127246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9878127246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12522531840).

9878127246 is an abundant number, since it is smaller than the sum of its proper divisors (15166936434).

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

9878127246 is a wasteful number, since it uses less digits than its factorization.

9878127246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71742 (or 71739 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 9878127246 is about 99388.7682084852. The cubic root of 9878127246 is about 2145.6466624133.

The spelling of 9878127246 in words is "nine billion, eight hundred seventy-eight million, one hundred twenty-seven thousand, two hundred forty-six".