49906289 has 2 divisors, whose sum is σ = 49906290. Its totient is φ = 49906288.

The previous prime is 49906279. The next prime is 49906291. The reversal of 49906289 is 98260994.

49906289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42250000 + 7656289 = 6500^2 + 2767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49906289 is a prime.

It is a Sophie Germain prime.

Together with 49906291, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (49906279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24953144 + 24953145.

It is an arithmetic number, because the mean of its divisors is an integer number (24953145).

Almost surely, 2^49906289 is an apocalyptic number.

It is an amenable number.

49906289 is a deficient number, since it is larger than the sum of its proper divisors (1).

49906289 is an equidigital number, since it uses as much as digits as its factorization.

49906289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 49906289 is about 7064.4383357773. The cubic root of 49906289 is about 368.1728497425.

The spelling of 49906289 in words is "forty-nine million, nine hundred six thousand, two hundred eighty-nine".