248795909 has 2 divisors, whose sum is σ = 248795910. Its totient is φ = 248795908.

The previous prime is 248795887. The next prime is 248795933. The reversal of 248795909 is 909597842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193293409 + 55502500 = 13903^2 + 7450^2 .

It is a cyclic number.

It is not a de Polignac number, because 248795909 - 2⁸ = 248795653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248795509) 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, 124397954 + 124397955.

It is an arithmetic number, because the mean of its divisors is an integer number (124397955).

Almost surely, 2^248795909 is an apocalyptic number.

It is an amenable number.

248795909 is a deficient number, since it is larger than the sum of its proper divisors (1).

248795909 is an equidigital number, since it uses as much as digits as its factorization.

248795909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The square root of 248795909 is about 15773.2656415848. The cubic root of 248795909 is about 628.9475238106.

The spelling of 248795909 in words is "two hundred forty-eight million, seven hundred ninety-five thousand, nine hundred nine".