857029 has 2 divisors, whose sum is σ = 857030. Its totient is φ = 857028.

The previous prime is 857027. The next prime is 857039. The reversal of 857029 is 920758.

857029 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., 806404 + 50625 = 898^2 + 225^2 .

It is a cyclic number.

It is not a de Polignac number, because 857029 - 2¹ = 857027 is a prime.

Together with 857027, it forms a pair of twin primes.

It is an Ulam number.

It is a d-powerful number, because it can be written as 8³ + 5³ + 0 + 7⁷ + 2¹⁵ + 9² .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (857027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428514 + 428515.

It is an arithmetic number, because the mean of its divisors is an integer number (428515).

2⁸⁵⁷⁰²⁹ is an apocalyptic number.

It is an amenable number.

857029 is a deficient number, since it is larger than the sum of its proper divisors (1).

857029 is an equidigital number, since it uses as much as digits as its factorization.

857029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 857029 is about 925.7586078455. The cubic root of 857029 is about 94.9872189638.

The spelling of 857029 in words is "eight hundred fifty-seven thousand, twenty-nine".