834908689 has 2 divisors, whose sum is σ = 834908690. Its totient is φ = 834908688.

The previous prime is 834908687. The next prime is 834908759. The reversal of 834908689 is 986809438.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 823403025 + 11505664 = 28695^2 + 3392^2 .

It is a cyclic number.

It is not a de Polignac number, because 834908689 - 2¹ = 834908687 is a prime.

Together with 834908687, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (834908681) 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, 417454344 + 417454345.

It is an arithmetic number, because the mean of its divisors is an integer number (417454345).

Almost surely, 2^834908689 is an apocalyptic number.

It is an amenable number.

834908689 is a deficient number, since it is larger than the sum of its proper divisors (1).

834908689 is an equidigital number, since it uses as much as digits as its factorization.

834908689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2985984, while the sum is 55.

The square root of 834908689 is about 28894.7865366747. The cubic root of 834908689 is about 941.6286421833.

The spelling of 834908689 in words is "eight hundred thirty-four million, nine hundred eight thousand, six hundred eighty-nine".