4226209 has 4 divisors (see below), whose sum is σ = 4551316. Its totient is φ = 3901104.

The previous prime is 4226207. The next prime is 4226213. The reversal of 4226209 is 9026224.

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 1617984 + 2608225 = 1272^2 + 1615^2 .

It is a cyclic number.

It is not a de Polignac number, because 4226209 - 2¹ = 4226207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4226203) 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, 162534 + ... + 162559.

It is an arithmetic number, because the mean of its divisors is an integer number (1137829).

Almost surely, 2^4226209 is an apocalyptic number.

It is an amenable number.

4226209 is a deficient number, since it is larger than the sum of its proper divisors (325107).

4226209 is a wasteful number, since it uses less digits than its factorization.

4226209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325106.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 4226209 is about 2055.7745498960. The cubic root of 4226209 is about 161.6777748889.

The spelling of 4226209 in words is "four million, two hundred twenty-six thousand, two hundred nine".