248645849 has 2 divisors, whose sum is σ = 248645850. Its totient is φ = 248645848.

The previous prime is 248645833. The next prime is 248645867. The reversal of 248645849 is 948546842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213160000 + 35485849 = 14600^2 + 5957^2 .

It is a cyclic number.

It is not a de Polignac number, because 248645849 - 2⁴ = 248645833 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 248645797 and 248645806.

It is not a weakly prime, because it can be changed into another prime (248645869) 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, 124322924 + 124322925.

It is an arithmetic number, because the mean of its divisors is an integer number (124322925).

Almost surely, 2^248645849 is an apocalyptic number.

It is an amenable number.

248645849 is a deficient number, since it is larger than the sum of its proper divisors (1).

248645849 is an equidigital number, since it uses as much as digits as its factorization.

248645849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2211840, while the sum is 50.

The square root of 248645849 is about 15768.5081412288. The cubic root of 248645849 is about 628.8210495355.

The spelling of 248645849 in words is "two hundred forty-eight million, six hundred forty-five thousand, eight hundred forty-nine".