834112921 has 2 divisors, whose sum is σ = 834112922. Its totient is φ = 834112920.

The previous prime is 834112919. The next prime is 834112927. The reversal of 834112921 is 129211438.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 818589321 + 15523600 = 28611^2 + 3940^2 .

It is a cyclic number.

It is not a de Polignac number, because 834112921 - 2¹ = 834112919 is a prime.

Together with 834112919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (834112927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417056460 + 417056461.

It is an arithmetic number, because the mean of its divisors is an integer number (417056461).

Almost surely, 2^834112921 is an apocalyptic number.

It is an amenable number.

834112921 is a deficient number, since it is larger than the sum of its proper divisors (1).

834112921 is an equidigital number, since it uses as much as digits as its factorization.

834112921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 31.

The square root of 834112921 is about 28881.0131574361. The cubic root of 834112921 is about 941.3293854540.

The spelling of 834112921 in words is "eight hundred thirty-four million, one hundred twelve thousand, nine hundred twenty-one".