41009009 has 2 divisors, whose sum is σ = 41009010. Its totient is φ = 41009008.

The previous prime is 41008993. The next prime is 41009027. The reversal of 41009009 is 90090014.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31888609 + 9120400 = 5647^2 + 3020^2 .

It is a cyclic number.

It is not a de Polignac number, because 41009009 - 2⁴ = 41008993 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

41009009 is a modest number, since divided by 9009 gives 41 as remainder.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (41009039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20504504 + 20504505.

It is an arithmetic number, because the mean of its divisors is an integer number (20504505).

Almost surely, 2^41009009 is an apocalyptic number.

It is an amenable number.

41009009 is a deficient number, since it is larger than the sum of its proper divisors (1).

41009009 is an equidigital number, since it uses as much as digits as its factorization.

41009009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 41009009 is about 6403.8276835030. The cubic root of 41009009 is about 344.8469782774.

The spelling of 41009009 in words is "forty-one million, nine thousand, nine".