828681349 has 2 divisors, whose sum is σ = 828681350. Its totient is φ = 828681348.

The previous prime is 828681331. The next prime is 828681383. The reversal of 828681349 is 943186828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 754600900 + 74080449 = 27470^2 + 8607^2 .

It is a cyclic number.

It is not a de Polignac number, because 828681349 - 2⁹ = 828680837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (828681649) 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, 414340674 + 414340675.

It is an arithmetic number, because the mean of its divisors is an integer number (414340675).

Almost surely, 2^828681349 is an apocalyptic number.

It is an amenable number.

828681349 is a deficient number, since it is larger than the sum of its proper divisors (1).

828681349 is an equidigital number, since it uses as much as digits as its factorization.

828681349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 663552, while the sum is 49.

The square root of 828681349 is about 28786.8259625823. The cubic root of 828681349 is about 939.2816864051.

The spelling of 828681349 in words is "eight hundred twenty-eight million, six hundred eighty-one thousand, three hundred forty-nine".