9847994997489 has 48 divisors (see below), whose sum is σ = 15072464400000. Its totient is φ = 5704405724160.

The previous prime is 9847994997481. The next prime is 9847994997493.

9847994997489 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9847994997489 - 2³ = 9847994997481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9847994997396 and 9847994997405.

It is not an unprimeable number, because it can be changed into a prime (9847994997481) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9955707 + ... + 10900095.

It is an arithmetic number, because the mean of its divisors is an integer number (314009675000).

Almost surely, 2^{9847994997489} is an apocalyptic number.

It is an amenable number.

9847994997489 is a deficient number, since it is larger than the sum of its proper divisors (5224469402511).

9847994997489 is a wasteful number, since it uses less digits than its factorization.

9847994997489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945686 (or 945675 counting only the distinct ones).

The product of its digits is 106662334464, while the sum is 96.

The spelling of 9847994997489 in words is "nine trillion, eight hundred forty-seven billion, nine hundred ninety-four million, nine hundred ninety-seven thousand, four hundred eighty-nine".