9042009 has 4 divisors (see below), whose sum is σ = 12056016. Its totient is φ = 6028004.

The previous prime is 9041993. The next prime is 9042029. The reversal of 9042009 is 9002409.

9042009 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.

It is a cyclic number.

It is not a de Polignac number, because 9042009 - 2⁴ = 9041993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9042009.

It is not an unprimeable number, because it can be changed into a prime (9042029) 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, 1506999 + ... + 1507004.

It is an arithmetic number, because the mean of its divisors is an integer number (3014004).

Almost surely, 2^9042009 is an apocalyptic number.

It is an amenable number.

9042009 is a deficient number, since it is larger than the sum of its proper divisors (3014007).

9042009 is a wasteful number, since it uses less digits than its factorization.

9042009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3014006.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 9042009 is about 3006.9933488453. The cubic root of 9042009 is about 208.3315179931.

The spelling of 9042009 in words is "nine million, forty-two thousand, nine".