49928209 has 2 divisors, whose sum is σ = 49928210. Its totient is φ = 49928208.

The previous prime is 49928189. The next prime is 49928231. The reversal of 49928209 is 90282994.

It is a happy number.

49928209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32455809 + 17472400 = 5697^2 + 4180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49928209 is a prime.

It is not a weakly prime, because it can be changed into another prime (49928299) 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, 24964104 + 24964105.

It is an arithmetic number, because the mean of its divisors is an integer number (24964105).

Almost surely, 2^49928209 is an apocalyptic number.

It is an amenable number.

49928209 is a deficient number, since it is larger than the sum of its proper divisors (1).

49928209 is an equidigital number, since it uses as much as digits as its factorization.

49928209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 49928209 is about 7065.9895980676. The cubic root of 49928209 is about 368.2267452051.

The spelling of 49928209 in words is "forty-nine million, nine hundred twenty-eight thousand, two hundred nine".