49917739 has 2 divisors, whose sum is σ = 49917740. Its totient is φ = 49917738.

The previous prime is 49917737. The next prime is 49917743. The reversal of 49917739 is 93771994.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49917739 - 2¹ = 49917737 is a prime.

Together with 49917737, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 49917692 and 49917701.

It is not a weakly prime, because it can be changed into another prime (49917733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24958869 + 24958870.

It is an arithmetic number, because the mean of its divisors is an integer number (24958870).

Almost surely, 2^49917739 is an apocalyptic number.

49917739 is a deficient number, since it is larger than the sum of its proper divisors (1).

49917739 is an equidigital number, since it uses as much as digits as its factorization.

49917739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 428652, while the sum is 49.

The square root of 49917739 is about 7065.2486863521. The cubic root of 49917739 is about 368.2010042221.

The spelling of 49917739 in words is "forty-nine million, nine hundred seventeen thousand, seven hundred thirty-nine".