849009 has 8 divisors (see below), whose sum is σ = 1293760. Its totient is φ = 485136.

The previous prime is 848993. The next prime is 849019. The reversal of 849009 is 900948.

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

It is not a de Polignac number, because 849009 - 2⁴ = 848993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (849019) 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 7 ways as a sum of consecutive naturals, for example, 20194 + ... + 20235.

It is an arithmetic number, because the mean of its divisors is an integer number (161720).

2⁸⁴⁹⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

849009 is a deficient number, since it is larger than the sum of its proper divisors (444751).

849009 is a wasteful number, since it uses less digits than its factorization.

849009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40439.

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

The square root of 849009 is about 921.4168437792. The cubic root of 849009 is about 94.6899959586.

The spelling of 849009 in words is "eight hundred forty-nine thousand, nine".