49919 has 2 divisors, whose sum is σ = 49920. Its totient is φ = 49918.

The previous prime is 49891. The next prime is 49921. The reversal of 49919 is 91994.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49919 - 2⁸ = 49663 is a prime.

It is a super-2 number, since 2×49919² = 4983813122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 49921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49939) 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 as a sum of consecutive naturals, namely, 24959 + 24960.

It is an arithmetic number, because the mean of its divisors is an integer number (24960).

2⁴⁹⁹¹⁹ is an apocalyptic number.

49919 is a deficient number, since it is larger than the sum of its proper divisors (1).

49919 is an equidigital number, since it uses as much as digits as its factorization.

49919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2916, while the sum is 32.

The square root of 49919 is about 223.4256028301. The cubic root of 49919 is about 36.8204104640.

The spelling of 49919 in words is "forty-nine thousand, nine hundred nineteen".