248811109 has 2 divisors, whose sum is σ = 248811110. Its totient is φ = 248811108.

The previous prime is 248811089. The next prime is 248811119. The reversal of 248811109 is 901118842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240343009 + 8468100 = 15503^2 + 2910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248811109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248811119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124405554 + 124405555.

It is an arithmetic number, because the mean of its divisors is an integer number (124405555).

Almost surely, 2^248811109 is an apocalyptic number.

It is an amenable number.

248811109 is a deficient number, since it is larger than the sum of its proper divisors (1).

248811109 is an equidigital number, since it uses as much as digits as its factorization.

248811109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 34.

The square root of 248811109 is about 15773.7474621600. The cubic root of 248811109 is about 628.9603319093.

The spelling of 248811109 in words is "two hundred forty-eight million, eight hundred eleven thousand, one hundred nine".