856896629 has 2 divisors, whose sum is σ = 856896630. Its totient is φ = 856896628.

The previous prime is 856896619. The next prime is 856896641. The reversal of 856896629 is 926698658.

856896629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 674700625 + 182196004 = 25975^2 + 13498^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-856896629 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 (856896619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428448314 + 428448315.

It is an arithmetic number, because the mean of its divisors is an integer number (428448315).

Almost surely, 2^856896629 is an apocalyptic number.

It is an amenable number.

856896629 is a deficient number, since it is larger than the sum of its proper divisors (1).

856896629 is an equidigital number, since it uses as much as digits as its factorization.

856896629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11197440, while the sum is 59.

The square root of 856896629 is about 29272.7967403185. The cubic root of 856896629 is about 949.8232834732.

The spelling of 856896629 in words is "eight hundred fifty-six million, eight hundred ninety-six thousand, six hundred twenty-nine".