9913172886 has 24 divisors (see below), whose sum is σ = 21480390360. Its totient is φ = 3304106496.

The previous prime is 9913172813. The next prime is 9913172887. The reversal of 9913172886 is 6882713199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9913172887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 352825 + ... + 379883.

It is an arithmetic number, because the mean of its divisors is an integer number (895016265).

Almost surely, 2^9913172886 is an apocalyptic number.

9913172886 is an abundant number, since it is smaller than the sum of its proper divisors (11567217474).

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

9913172886 is a wasteful number, since it uses less digits than its factorization.

9913172886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47420 (or 47417 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 9913172886 is about 99564.9179480403. The cubic root of 9913172886 is about 2148.1811107343.

The spelling of 9913172886 in words is "nine billion, nine hundred thirteen million, one hundred seventy-two thousand, eight hundred eighty-six".