50040009 has 6 divisors (see below), whose sum is σ = 72280026. Its totient is φ = 33360000.

The previous prime is 50039981. The next prime is 50040013. The reversal of 50040009 is 90004005.

It can be written as a sum of positive squares in only one way, i.e., 36000000 + 14040009 = 6000^2 + 3747^2 .

It is not a de Polignac number, because 50040009 - 2²⁵ = 16485577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50039973 and 50040000.

It is not an unprimeable number, because it can be changed into a prime (50040059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2779992 + ... + 2780009.

It is an arithmetic number, because the mean of its divisors is an integer number (12046671).

Almost surely, 2^50040009 is an apocalyptic number.

It is an amenable number.

50040009 is a deficient number, since it is larger than the sum of its proper divisors (22240017).

50040009 is a wasteful number, since it uses less digits than its factorization.

50040009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5560007 (or 5560004 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 50040009 is about 7073.8963096726. The cubic root of 50040009 is about 368.5013866105.

The spelling of 50040009 in words is "fifty million, forty thousand, nine".