9906126971 has 4 divisors (see below), whose sum is σ = 10668136752. Its totient is φ = 9144117192.

The previous prime is 9906126953. The next prime is 9906126977. The reversal of 9906126971 is 1796216099.

9906126971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1796216099 = 349 ⋅5146751.

It is a cyclic number.

It is not a de Polignac number, because 9906126971 - 2¹⁴ = 9906110587 is a prime.

It is a super-3 number, since 3×9906126971³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (9906126977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381004871 + ... + 381004896.

It is an arithmetic number, because the mean of its divisors is an integer number (2667034188).

Almost surely, 2^9906126971 is an apocalyptic number.

9906126971 is a deficient number, since it is larger than the sum of its proper divisors (762009781).

9906126971 is a wasteful number, since it uses less digits than its factorization.

9906126971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762009780.

The product of its (nonzero) digits is 367416, while the sum is 50.

The square root of 9906126971 is about 99529.5281361265. The cubic root of 9906126971 is about 2147.6720409973.

The spelling of 9906126971 in words is "nine billion, nine hundred six million, one hundred twenty-six thousand, nine hundred seventy-one".