2206009 has 4 divisors (see below), whose sum is σ = 2375716. Its totient is φ = 2036304.

The previous prime is 2205989. The next prime is 2206021. The reversal of 2206009 is 9006022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 356409 + 1849600 = 597^2 + 1360^2 .

It is a cyclic number.

It is not a de Polignac number, because 2206009 - 2¹¹ = 2203961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2206709) 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, 84834 + ... + 84859.

It is an arithmetic number, because the mean of its divisors is an integer number (593929).

2^2206009 is an apocalyptic number.

It is an amenable number.

2206009 is a deficient number, since it is larger than the sum of its proper divisors (169707).

2206009 is a wasteful number, since it uses less digits than its factorization.

2206009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169706.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2206009 is about 1485.2639496063. The cubic root of 2206009 is about 130.1774499783.

The spelling of 2206009 in words is "two million, two hundred six thousand, nine".