9979711129 has 4 divisors (see below), whose sum is σ = 9988893184. Its totient is φ = 9970529076.

The previous prime is 9979711087. The next prime is 9979711139. The reversal of 9979711129 is 9211179799.

9979711129 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9211179799 = 3739 ⋅2463541.

It is a cyclic number.

It is not a de Polignac number, because 9979711129 - 2¹¹ = 9979709081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9979711129.

It is not an unprimeable number, because it can be changed into a prime (9979711139) 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, 4589397 + ... + 4591570.

It is an arithmetic number, because the mean of its divisors is an integer number (2497223296).

Almost surely, 2^9979711129 is an apocalyptic number.

It is an amenable number.

9979711129 is a deficient number, since it is larger than the sum of its proper divisors (9182055).

9979711129 is a wasteful number, since it uses less digits than its factorization.

9979711129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9182054.

The product of its digits is 642978, while the sum is 55.

The square root of 9979711129 is about 99898.5041379499. The cubic root of 9979711129 is about 2152.9766686164.

The spelling of 9979711129 in words is "nine billion, nine hundred seventy-nine million, seven hundred eleven thousand, one hundred twenty-nine".