50398809 has 4 divisors (see below), whose sum is σ = 67198416. Its totient is φ = 33599204.

The previous prime is 50398801. The next prime is 50398861. The reversal of 50398809 is 90889305.

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.

It is a cyclic number.

It is not a de Polignac number, because 50398809 - 2³ = 50398801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50398801) 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, 8399799 + ... + 8399804.

It is an arithmetic number, because the mean of its divisors is an integer number (16799604).

Almost surely, 2^50398809 is an apocalyptic number.

It is an amenable number.

50398809 is a deficient number, since it is larger than the sum of its proper divisors (16799607).

50398809 is a wasteful number, since it uses less digits than its factorization.

50398809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16799606.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 50398809 is about 7099.2118576642. The cubic root of 50398809 is about 369.3800404430.

The spelling of 50398809 in words is "fifty million, three hundred ninety-eight thousand, eight hundred nine".