856074029 has 2 divisors, whose sum is σ = 856074030. Its totient is φ = 856074028.

The previous prime is 856073969. The next prime is 856074047. The reversal of 856074029 is 920470658.

856074029 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 643789129 + 212284900 = 25373^2 + 14570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-856074029 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (856074529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428037014 + 428037015.

It is an arithmetic number, because the mean of its divisors is an integer number (428037015).

Almost surely, 2^856074029 is an apocalyptic number.

It is an amenable number.

856074029 is a deficient number, since it is larger than the sum of its proper divisors (1).

856074029 is an equidigital number, since it uses as much as digits as its factorization.

856074029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 856074029 is about 29258.7427788687. The cubic root of 856074029 is about 949.5192503854.

The spelling of 856074029 in words is "eight hundred fifty-six million, seventy-four thousand, twenty-nine".