50849809 has 4 divisors (see below), whose sum is σ = 50966080. Its totient is φ = 50733540.

The previous prime is 50849797. The next prime is 50849819. The reversal of 50849809 is 90894805.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90894805 = 5 ⋅18178961.

It is a cyclic number.

It is not a de Polignac number, because 50849809 - 2¹⁹ = 50325521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50849819) 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 in 3 ways as a sum of consecutive naturals, for example, 57477 + ... + 58354.

It is an arithmetic number, because the mean of its divisors is an integer number (12741520).

Almost surely, 2^50849809 is an apocalyptic number.

It is an amenable number.

50849809 is a deficient number, since it is larger than the sum of its proper divisors (116271).

50849809 is a wasteful number, since it uses less digits than its factorization.

50849809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116270.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 50849809 is about 7130.9052020063. The cubic root of 50849809 is about 370.4785844960.

The spelling of 50849809 in words is "fifty million, eight hundred forty-nine thousand, eight hundred nine".