50009009 has 2 divisors, whose sum is σ = 50009010. Its totient is φ = 50009008.

The previous prime is 50008997. The next prime is 50009017. The reversal of 50009009 is 90090005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49392784 + 616225 = 7028^2 + 785^2 .

It is a cyclic number.

It is not a de Polignac number, because 50009009 - 2⁴ = 50008993 is a prime.

It is a Sophie Germain prime.

50009009 is a modest number, since divided by 9009 gives 50 as remainder.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (50009209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25004504 + 25004505.

It is an arithmetic number, because the mean of its divisors is an integer number (25004505).

Almost surely, 2^50009009 is an apocalyptic number.

It is an amenable number.

50009009 is a deficient number, since it is larger than the sum of its proper divisors (1).

50009009 is an equidigital number, since it uses as much as digits as its factorization.

50009009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 405, while the sum is 23.

The square root of 50009009 is about 7071.7048156721. The cubic root of 50009009 is about 368.4252748284.

The spelling of 50009009 in words is "fifty million, nine thousand, nine".