9799999989 has 16 divisors (see below), whose sum is σ = 14104468224. Its totient is φ = 6016766400.

The previous prime is 9799999943. The next prime is 9799999997. The reversal of 9799999989 is 9899999979.

It is a happy number.

It is not a de Polignac number, because 9799999989 - 2¹² = 9799995893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9799999789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274702 + ... + 308319.

It is an arithmetic number, because the mean of its divisors is an integer number (881529264).

Almost surely, 2^9799999989 is an apocalyptic number.

It is an amenable number.

9799999989 is a deficient number, since it is larger than the sum of its proper divisors (4304468235).

9799999989 is a wasteful number, since it uses less digits than its factorization.

9799999989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583468.

The product of its digits is 2410616376, while the sum is 87.

The square root of 9799999989 is about 98994.9493105583. The cubic root of 9799999989 is about 2139.9749603295.

The spelling of 9799999989 in words is "nine billion, seven hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty-nine".