50398289 has 4 divisors (see below), whose sum is σ = 50425524. Its totient is φ = 50371056.

The previous prime is 50398277. The next prime is 50398291. The reversal of 50398289 is 98289305.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98289305 = 5 ⋅19657861.

It can be written as a sum of positive squares in 2 ways, for example, as 16851025 + 33547264 = 4105^2 + 5792^2 .

It is a cyclic number.

It is not a de Polignac number, because 50398289 - 2¹⁶ = 50332753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50398889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10622 + ... + 14615.

It is an arithmetic number, because the mean of its divisors is an integer number (12606381).

Almost surely, 2^50398289 is an apocalyptic number.

It is an amenable number.

50398289 is a deficient number, since it is larger than the sum of its proper divisors (27235).

50398289 is a wasteful number, since it uses less digits than its factorization.

50398289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27234.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 50398289 is about 7099.1752337860. The cubic root of 50398289 is about 369.3787700540.

The spelling of 50398289 in words is "fifty million, three hundred ninety-eight thousand, two hundred eighty-nine".