9888478238 has 16 divisors (see below), whose sum is σ = 15355828800. Its totient is φ = 4772750976.

The previous prime is 9888478207. The next prime is 9888478291. The reversal of 9888478238 is 8328748889.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713663 + ... + 727386.

It is an arithmetic number, because the mean of its divisors is an integer number (959739300).

Almost surely, 2^9888478238 is an apocalyptic number.

9888478238 is a deficient number, since it is larger than the sum of its proper divisors (5467350562).

9888478238 is a wasteful number, since it uses less digits than its factorization.

9888478238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441171.

The product of its digits is 49545216, while the sum is 65.

The square root of 9888478238 is about 99440.8278223789. The cubic root of 9888478238 is about 2146.3958536253.

The spelling of 9888478238 in words is "nine billion, eight hundred eighty-eight million, four hundred seventy-eight thousand, two hundred thirty-eight".