9878397305 has 48 divisors (see below), whose sum is σ = 14563027584. Its totient is φ = 6400880640.

The previous prime is 9878397299. The next prime is 9878397323. The reversal of 9878397305 is 5037938789.

It is not a de Polignac number, because 9878397305 - 2⁴ = 9878397289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 457145 + ... + 478265.

It is an arithmetic number, because the mean of its divisors is an integer number (303396408).

Almost surely, 2^9878397305 is an apocalyptic number.

It is an amenable number.

9878397305 is a deficient number, since it is larger than the sum of its proper divisors (4684630279).

9878397305 is a wasteful number, since it uses less digits than its factorization.

9878397305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21246 (or 21239 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 59.

The square root of 9878397305 is about 99390.1267983898. The cubic root of 9878397305 is about 2145.6662155768. Note that the first 3 decimals are identical.

The spelling of 9878397305 in words is "nine billion, eight hundred seventy-eight million, three hundred ninety-seven thousand, three hundred five".