49939 has 2 divisors, whose sum is σ = 49940. Its totient is φ = 49938.

The previous prime is 49937. The next prime is 49943. The reversal of 49939 is 93994.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49939 - 2¹ = 49937 is a prime.

Together with 49937, it forms a pair of twin primes.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (49937) 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 as a sum of consecutive naturals, namely, 24969 + 24970.

It is an arithmetic number, because the mean of its divisors is an integer number (24970).

2⁴⁹⁹³⁹ is an apocalyptic number.

49939 is a deficient number, since it is larger than the sum of its proper divisors (1).

49939 is an equidigital number, since it uses as much as digits as its factorization.

49939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748, while the sum is 34.

The square root of 49939 is about 223.4703559759. The cubic root of 49939 is about 36.8253271616.

The spelling of 49939 in words is "forty-nine thousand, nine hundred thirty-nine".