834724909 has 2 divisors, whose sum is σ = 834724910. Its totient is φ = 834724908.

The previous prime is 834724907. The next prime is 834724937. The reversal of 834724909 is 909427438.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 627652809 + 207072100 = 25053^2 + 14390^2 .

It is a cyclic number.

It is not a de Polignac number, because 834724909 - 2¹ = 834724907 is a prime.

It is a super-3 number, since 3×834724909³ (a number of 28 digits) contains 333 as substring.

Together with 834724907, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (834724907) 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, 417362454 + 417362455.

It is an arithmetic number, because the mean of its divisors is an integer number (417362455).

Almost surely, 2^834724909 is an apocalyptic number.

It is an amenable number.

834724909 is a deficient number, since it is larger than the sum of its proper divisors (1).

834724909 is an equidigital number, since it uses as much as digits as its factorization.

834724909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 834724909 is about 28891.6062031864. The cubic root of 834724909 is about 941.5595467189.

The spelling of 834724909 in words is "eight hundred thirty-four million, seven hundred twenty-four thousand, nine hundred nine".