248305789 has 2 divisors, whose sum is σ = 248305790. Its totient is φ = 248305788.

The previous prime is 248305763. The next prime is 248305793. The reversal of 248305789 is 987503842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202635225 + 45670564 = 14235^2 + 6758^2 .

It is a cyclic number.

It is not a de Polignac number, because 248305789 - 2¹⁵ = 248273021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248305289) 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, 124152894 + 124152895.

It is an arithmetic number, because the mean of its divisors is an integer number (124152895).

Almost surely, 2^248305789 is an apocalyptic number.

It is an amenable number.

248305789 is a deficient number, since it is larger than the sum of its proper divisors (1).

248305789 is an equidigital number, since it uses as much as digits as its factorization.

248305789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 248305789 is about 15757.7215675363. The cubic root of 248305789 is about 628.5342501303.

The spelling of 248305789 in words is "two hundred forty-eight million, three hundred five thousand, seven hundred eighty-nine".