50409 has 8 divisors (see below), whose sum is σ = 74720. Its totient is φ = 33588.

The previous prime is 50387. The next prime is 50411. The reversal of 50409 is 90405.

50409 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 50409 - 2⁵ = 50377 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50391 and 50400.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 50409.

It is not an unprimeable number, because it can be changed into a prime (50459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 907 + ... + 960.

It is an arithmetic number, because the mean of its divisors is an integer number (9340).

2⁵⁰⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

50409 is a deficient number, since it is larger than the sum of its proper divisors (24311).

50409 is a wasteful number, since it uses less digits than its factorization.

50409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876 (or 1870 counting only the distinct ones).

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

The square root of 50409 is about 224.5194869048. The cubic root of 50409 is about 36.9404935861.

The spelling of 50409 in words is "fifty thousand, four hundred nine".