49813789 has 2 divisors, whose sum is σ = 49813790. Its totient is φ = 49813788.

The previous prime is 49813739. The next prime is 49813831. The reversal of 49813789 is 98731894.

It is a happy number.

49813789 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., 45225625 + 4588164 = 6725^2 + 2142^2 .

It is a cyclic number.

It is not a de Polignac number, because 49813789 - 2⁷ = 49813661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49813739) 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, 24906894 + 24906895.

It is an arithmetic number, because the mean of its divisors is an integer number (24906895).

Almost surely, 2^49813789 is an apocalyptic number.

It is an amenable number.

49813789 is a deficient number, since it is larger than the sum of its proper divisors (1).

49813789 is an equidigital number, since it uses as much as digits as its factorization.

49813789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 49.

The square root of 49813789 is about 7057.8884236009. Note that the first 3 decimals coincide. The cubic root of 49813789 is about 367.9452428176.

The spelling of 49813789 in words is "forty-nine million, eight hundred thirteen thousand, seven hundred eighty-nine".