50440009 has 2 divisors, whose sum is σ = 50440010. Its totient is φ = 50440008.

The previous prime is 50440001. The next prime is 50440031. The reversal of 50440009 is 90004405.

It is an a-pointer prime, because the next prime (50440031) can be obtained adding 50440009 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36542025 + 13897984 = 6045^2 + 3728^2 .

It is a cyclic number.

It is not a de Polignac number, because 50440009 - 2³ = 50440001 is a prime.

It is not a weakly prime, because it can be changed into another prime (50440001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25220004 + 25220005.

It is an arithmetic number, because the mean of its divisors is an integer number (25220005).

Almost surely, 2^50440009 is an apocalyptic number.

It is an amenable number.

50440009 is a deficient number, since it is larger than the sum of its proper divisors (1).

50440009 is an equidigital number, since it uses as much as digits as its factorization.

50440009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 50440009 is about 7102.1129954402. The cubic root of 50440009 is about 369.4806665816.

The spelling of 50440009 in words is "fifty million, four hundred forty thousand, nine".