2222009 has 8 divisors (see below), whose sum is σ = 2316360. Its totient is φ = 2128896.

The previous prime is 2221997. The next prime is 2222023. The reversal of 2222009 is 9002222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 270400 + 1951609 = 520^2 + 1397^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2222009 - 2⁸ = 2221753 is a prime.

It is a d-powerful number, because it can be written as 2⁴ + 2⁸ + 2¹⁶ + 2²¹ + 0 + 0 + 9⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2222039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5399 + ... + 5795.

It is an arithmetic number, because the mean of its divisors is an integer number (289545).

2^2222009 is an apocalyptic number.

2222009 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2222009 is a deficient number, since it is larger than the sum of its proper divisors (94351).

2222009 is a wasteful number, since it uses less digits than its factorization.

2222009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2222009 is about 1490.6404663768. The cubic root of 2222009 is about 130.4914142216.

The spelling of 2222009 in words is "two million, two hundred twenty-two thousand, nine".