9879009 has 8 divisors (see below), whose sum is σ = 15053760. Its totient is φ = 5645136.

The previous prime is 9879007. The next prime is 9879013. The reversal of 9879009 is 9009789.

It is a happy number.

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

It is not a de Polignac number, because 9879009 - 2¹ = 9879007 is a prime.

9879009 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9879007) 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, 235194 + ... + 235235.

It is an arithmetic number, because the mean of its divisors is an integer number (1881720).

Almost surely, 2^9879009 is an apocalyptic number.

It is an amenable number.

9879009 is a deficient number, since it is larger than the sum of its proper divisors (5174751).

9879009 is a wasteful number, since it uses less digits than its factorization.

9879009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470439.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 9879009 is about 3143.0890855972. The cubic root of 9879009 is about 214.5710502997.

The spelling of 9879009 in words is "nine million, eight hundred seventy-nine thousand, nine".