34782809 has 2 divisors, whose sum is σ = 34782810. Its totient is φ = 34782808.

The previous prime is 34782779. The next prime is 34782841. The reversal of 34782809 is 90828743.

34782809 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., 19998784 + 14784025 = 4472^2 + 3845^2 .

It is an emirp because it is prime and its reverse (90828743) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34782809 - 2²⁴ = 18005593 is a prime.

It is not a weakly prime, because it can be changed into another prime (34782859) 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, 17391404 + 17391405.

It is an arithmetic number, because the mean of its divisors is an integer number (17391405).

Almost surely, 2^34782809 is an apocalyptic number.

It is an amenable number.

34782809 is a deficient number, since it is larger than the sum of its proper divisors (1).

34782809 is an equidigital number, since it uses as much as digits as its factorization.

34782809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 34782809 is about 5897.6952277987. The cubic root of 34782809 is about 326.4286112112.

The spelling of 34782809 in words is "thirty-four million, seven hundred eighty-two thousand, eight hundred nine".