834042991 has 2 divisors, whose sum is σ = 834042992. Its totient is φ = 834042990.

The previous prime is 834042973. The next prime is 834043009. The reversal of 834042991 is 199240438.

It is a balanced prime because it is at equal distance from previous prime (834042973) and next prime (834043009).

It is a cyclic number.

It is not a de Polignac number, because 834042991 - 2⁹ = 834042479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (834042931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417021495 + 417021496.

It is an arithmetic number, because the mean of its divisors is an integer number (417021496).

Almost surely, 2^834042991 is an apocalyptic number.

834042991 is a deficient number, since it is larger than the sum of its proper divisors (1).

834042991 is an equidigital number, since it uses as much as digits as its factorization.

834042991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 834042991 is about 28879.8024750863. The cubic root of 834042991 is about 941.3030784629.

The spelling of 834042991 in words is "eight hundred thirty-four million, forty-two thousand, nine hundred ninety-one".