50409839 has 4 divisors (see below), whose sum is σ = 50503560. Its totient is φ = 50316120.

The previous prime is 50409823. The next prime is 50409883. The reversal of 50409839 is 93890405.

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 50409839 - 2⁴ = 50409823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50409899) 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, 46049 + ... + 47130.

It is an arithmetic number, because the mean of its divisors is an integer number (12625890).

Almost surely, 2^50409839 is an apocalyptic number.

50409839 is a deficient number, since it is larger than the sum of its proper divisors (93721).

50409839 is an equidigital number, since it uses as much as digits as its factorization.

50409839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93720.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 50409839 is about 7099.9886619628. The cubic root of 50409839 is about 369.4069852905.

The spelling of 50409839 in words is "fifty million, four hundred nine thousand, eight hundred thirty-nine".