4036009 has 2 divisors, whose sum is σ = 4036010. Its totient is φ = 4036008.

The previous prime is 4036007. The next prime is 4036033. The reversal of 4036009 is 9006304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2418025 + 1617984 = 1555^2 + 1272^2 .

It is a cyclic number.

It is not a de Polignac number, because 4036009 - 2¹ = 4036007 is a prime.

Together with 4036007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4036001) 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 as a sum of consecutive naturals, namely, 2018004 + 2018005.

It is an arithmetic number, because the mean of its divisors is an integer number (2018005).

Almost surely, 2^4036009 is an apocalyptic number.

It is an amenable number.

4036009 is a deficient number, since it is larger than the sum of its proper divisors (1).

4036009 is an equidigital number, since it uses as much as digits as its factorization.

4036009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 4036009 is about 2008.9820805572. The cubic root of 4036009 is about 159.2150222982.

The spelling of 4036009 in words is "four million, thirty-six thousand, nine".