9894774989 has 12 divisors (see below), whose sum is σ = 11392326720. Its totient is φ = 8521812360.

The previous prime is 9894774943. The next prime is 9894774997.

9894774989 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9894774989 - 2²⁸ = 9626339533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9894774289) 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, 1241909 + ... + 1249850.

It is an arithmetic number, because the mean of its divisors is an integer number (949360560).

Almost surely, 2^9894774989 is an apocalyptic number.

It is an amenable number.

9894774989 is a deficient number, since it is larger than the sum of its proper divisors (1497551731).

9894774989 is a wasteful number, since it uses less digits than its factorization.

9894774989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491808 (or 2491789 counting only the distinct ones).

The product of its digits is 329204736, while the sum is 74.

The square root of 9894774989 is about 99472.4835771179. The cubic root of 9894774989 is about 2146.8513484676.

The spelling of 9894774989 in words is "nine billion, eight hundred ninety-four million, seven hundred seventy-four thousand, nine hundred eighty-nine".