948705509 has 2 divisors, whose sum is σ = 948705510. Its totient is φ = 948705508.

The previous prime is 948705491. The next prime is 948705529. The reversal of 948705509 is 905507849.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 596092225 + 352613284 = 24415^2 + 18778^2 .

It is a cyclic number.

It is not a de Polignac number, because 948705509 - 2⁸ = 948705253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (948705529) 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, 474352754 + 474352755.

It is an arithmetic number, because the mean of its divisors is an integer number (474352755).

Almost surely, 2^948705509 is an apocalyptic number.

It is an amenable number.

948705509 is a deficient number, since it is larger than the sum of its proper divisors (1).

948705509 is an equidigital number, since it uses as much as digits as its factorization.

948705509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 948705509 is about 30801.0634394334. The cubic root of 948705509 is about 982.6008620800.

The spelling of 948705509 in words is "nine hundred forty-eight million, seven hundred five thousand, five hundred nine".