50509439 has 4 divisors (see below), whose sum is σ = 50537280. Its totient is φ = 50481600.

The previous prime is 50509427. The next prime is 50509441. The reversal of 50509439 is 93490505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 50509439 - 2¹⁶ = 50443903 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50509399 and 50509408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50509409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10994 + ... + 14895.

It is an arithmetic number, because the mean of its divisors is an integer number (12634320).

Almost surely, 2^50509439 is an apocalyptic number.

50509439 is a deficient number, since it is larger than the sum of its proper divisors (27841).

50509439 is a wasteful number, since it uses less digits than its factorization.

50509439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27840.

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 50509439 is about 7106.9992964682. Note that the first 3 decimals coincide. The cubic root of 50509439 is about 369.6501172606.

The spelling of 50509439 in words is "fifty million, five hundred nine thousand, four hundred thirty-nine".