9947125386 has 96 divisors (see below), whose sum is σ = 23948960256. Its totient is φ = 2958516000.

The previous prime is 9947125373. The next prime is 9947125393. The reversal of 9947125386 is 6835217499.

9947125386 is a `hidden beast` number, since 9 + 94 + 7 + 12 + 538 + 6 = 666.

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, 4124521 + ... + 4126931.

It is an arithmetic number, because the mean of its divisors is an integer number (249468336).

Almost surely, 2^9947125386 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9947125386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11974480128).

9947125386 is an abundant number, since it is smaller than the sum of its proper divisors (14001834870).

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

9947125386 is a wasteful number, since it uses less digits than its factorization.

9947125386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2808 (or 2805 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 9947125386 is about 99735.2765374419. The cubic root of 9947125386 is about 2150.6308144309.

The spelling of 9947125386 in words is "nine billion, nine hundred forty-seven million, one hundred twenty-five thousand, three hundred eighty-six".