9809009 has 4 divisors (see below), whose sum is σ = 11210304. Its totient is φ = 8407716.

The previous prime is 9808987. The next prime is 9809027. The reversal of 9809009 is 9009089.

9809009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9009089 = 229 ⋅39341.

It is a cyclic number.

It is not a de Polignac number, because 9809009 - 2¹⁶ = 9743473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9809009.

It is not an unprimeable number, because it can be changed into a prime (9809029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700637 + ... + 700650.

It is an arithmetic number, because the mean of its divisors is an integer number (2802576).

Almost surely, 2^9809009 is an apocalyptic number.

It is an amenable number.

9809009 is a deficient number, since it is larger than the sum of its proper divisors (1401295).

9809009 is a wasteful number, since it uses less digits than its factorization.

9809009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401294.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 9809009 is about 3131.9337477028. The cubic root of 9809009 is about 214.0630509763.

The spelling of 9809009 in words is "nine million, eight hundred nine thousand, nine".