9798947126929 has 3 divisors (see below), whose sum is σ = 9798950257257. Its totient is φ = 9798943996602.

The previous prime is 9798947126923. The next prime is 9798947126939. The reversal of 9798947126929 is 9296217498979.

The square root of 9798947126929 is 3130327.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 9798947126929 - 2²⁹ = 9798410256017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9798947126923) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1565164 + ... + 4695490.

It is an arithmetic number, because the mean of its divisors is an integer number (3266316752419).

Almost surely, 2^{9798947126929} is an apocalyptic number.

9798947126929 is the 3130327-th square number.

9798947126929 is the 1565164-th centered octagonal number.

It is an amenable number.

9798947126929 is a deficient number, since it is larger than the sum of its proper divisors (3130328).

9798947126929 is an frugal number, since it uses more digits than its factorization.

9798947126929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6260654 (or 3130327 counting only the distinct ones).

The product of its digits is 2222131968, while the sum is 82.

The spelling of 9798947126929 in words is "nine trillion, seven hundred ninety-eight billion, nine hundred forty-seven million, one hundred twenty-six thousand, nine hundred twenty-nine".