9982279809 has 16 divisors (see below), whose sum is σ = 14821963200. Its totient is φ = 6639823008.

The previous prime is 9982279733. The next prime is 9982279823. The reversal of 9982279809 is 9089722899.

It is not a de Polignac number, because 9982279809 - 2¹⁶ = 9982214273 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9982279609) 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, 405324 + ... + 429245.

It is an arithmetic number, because the mean of its divisors is an integer number (926372700).

Almost surely, 2^9982279809 is an apocalyptic number.

It is an amenable number.

9982279809 is a deficient number, since it is larger than the sum of its proper divisors (4839683391).

9982279809 is a wasteful number, since it uses less digits than its factorization.

9982279809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835021 (or 835015 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 63.

The square root of 9982279809 is about 99911.3597595389. The cubic root of 9982279809 is about 2153.1613711468.

The spelling of 9982279809 in words is "nine billion, nine hundred eighty-two million, two hundred seventy-nine thousand, eight hundred nine".