6842209 has 4 divisors (see below), whose sum is σ = 7464240. Its totient is φ = 6220180.

The previous prime is 6842207. The next prime is 6842219. The reversal of 6842209 is 9022486.

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 6842209 - 2¹ = 6842207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6842207) 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 3 ways as a sum of consecutive naturals, for example, 310999 + ... + 311020.

It is an arithmetic number, because the mean of its divisors is an integer number (1866060).

Almost surely, 2^6842209 is an apocalyptic number.

It is an amenable number.

6842209 is a deficient number, since it is larger than the sum of its proper divisors (622031).

6842209 is a wasteful number, since it uses less digits than its factorization.

6842209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622030.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 6842209 is about 2615.7616481629. The cubic root of 6842209 is about 189.8448317612.

The spelling of 6842209 in words is "six million, eight hundred forty-two thousand, two hundred nine".