8940009 has 16 divisors (see below), whose sum is σ = 13152384. Its totient is φ = 5366400.

The previous prime is 8940007. The next prime is 8940017. The reversal of 8940009 is 9000498.

It is not a de Polignac number, because 8940009 - 2¹ = 8940007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8940007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1197 + ... + 4394.

It is an arithmetic number, because the mean of its divisors is an integer number (822024).

Almost surely, 2^8940009 is an apocalyptic number.

It is an amenable number.

8940009 is a deficient number, since it is larger than the sum of its proper divisors (4212375).

8940009 is a wasteful number, since it uses less digits than its factorization.

8940009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5648.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 8940009 is about 2989.9847825700. The cubic root of 8940009 is about 207.5451800783.

The spelling of 8940009 in words is "eight million, nine hundred forty thousand, nine".