9947906118 has 24 divisors (see below), whose sum is σ = 21567736008. Its totient is φ = 3313824192.

The previous prime is 9947906117. The next prime is 9947906131. The reversal of 9947906118 is 8116097499.

It is a super-2 number, since 2×9947906118² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9947906113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149980 + ... + 205887.

It is an arithmetic number, because the mean of its divisors is an integer number (898655667).

Almost surely, 2^9947906118 is an apocalyptic number.

9947906118 is an abundant number, since it is smaller than the sum of its proper divisors (11619829890).

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

9947906118 is a wasteful number, since it uses less digits than its factorization.

9947906118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357428 (or 357425 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The square root of 9947906118 is about 99739.1904819765. The cubic root of 9947906118 is about 2150.6870793418.

The spelling of 9947906118 in words is "nine billion, nine hundred forty-seven million, nine hundred six thousand, one hundred eighteen".