856324429 has 2 divisors, whose sum is σ = 856324430. Its totient is φ = 856324428.

The previous prime is 856324423. The next prime is 856324487. The reversal of 856324429 is 924423658.

856324429 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., 603832329 + 252492100 = 24573^2 + 15890^2 .

It is a cyclic number.

It is not a de Polignac number, because 856324429 - 2²³ = 847935821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (856324423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428162214 + 428162215.

It is an arithmetic number, because the mean of its divisors is an integer number (428162215).

Almost surely, 2^856324429 is an apocalyptic number.

It is an amenable number.

856324429 is a deficient number, since it is larger than the sum of its proper divisors (1).

856324429 is an equidigital number, since it uses as much as digits as its factorization.

856324429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 43.

The square root of 856324429 is about 29263.0215288852. The cubic root of 856324429 is about 949.6118188762.

The spelling of 856324429 in words is "eight hundred fifty-six million, three hundred twenty-four thousand, four hundred twenty-nine".