9989433217 has 8 divisors (see below), whose sum is σ = 10529552960. Its totient is φ = 9450749520.

The previous prime is 9989433169. The next prime is 9989433229. The reversal of 9989433217 is 7123349899.

9989433217 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9989433217 - 2⁷ = 9989433089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9989433277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344709 + ... + 372562.

It is an arithmetic number, because the mean of its divisors is an integer number (1316194120).

Almost surely, 2^9989433217 is an apocalyptic number.

It is an amenable number.

9989433217 is a deficient number, since it is larger than the sum of its proper divisors (540119743).

9989433217 is a wasteful number, since it uses less digits than its factorization.

9989433217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718023.

The product of its digits is 2939328, while the sum is 55.

The square root of 9989433217 is about 99947.1521205082. The cubic root of 9989433217 is about 2153.6755744602.

The spelling of 9989433217 in words is "nine billion, nine hundred eighty-nine million, four hundred thirty-three thousand, two hundred seventeen".