4492009 has 2 divisors, whose sum is σ = 4492010. Its totient is φ = 4492008.

The previous prime is 4492003. The next prime is 4492021. The reversal of 4492009 is 9002944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3052009 + 1440000 = 1747^2 + 1200^2 .

It is a cyclic number.

It is not a de Polignac number, because 4492009 - 2¹⁵ = 4459241 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4492003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2246004 + 2246005.

It is an arithmetic number, because the mean of its divisors is an integer number (2246005).

Almost surely, 2^4492009 is an apocalyptic number.

It is an amenable number.

4492009 is a deficient number, since it is larger than the sum of its proper divisors (1).

4492009 is an equidigital number, since it uses as much as digits as its factorization.

4492009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 4492009 is about 2119.4360098856. The cubic root of 4492009 is about 164.9985797245.

The spelling of 4492009 in words is "four million, four hundred ninety-two thousand, nine".