948669809 has 2 divisors, whose sum is σ = 948669810. Its totient is φ = 948669808.

The previous prime is 948669803. The next prime is 948669823. The reversal of 948669809 is 908966849.

948669809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 555639184 + 393030625 = 23572^2 + 19825^2 .

It is a cyclic number.

It is not a de Polignac number, because 948669809 - 2⁴ = 948669793 is a prime.

It is not a weakly prime, because it can be changed into another prime (948669803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474334904 + 474334905.

It is an arithmetic number, because the mean of its divisors is an integer number (474334905).

Almost surely, 2^948669809 is an apocalyptic number.

It is an amenable number.

948669809 is a deficient number, since it is larger than the sum of its proper divisors (1).

948669809 is an equidigital number, since it uses as much as digits as its factorization.

948669809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6718464, while the sum is 59.

The square root of 948669809 is about 30800.4839085362. The cubic root of 948669809 is about 982.5885367621.

The spelling of 948669809 in words is "nine hundred forty-eight million, six hundred sixty-nine thousand, eight hundred nine".