859638229 has 2 divisors, whose sum is σ = 859638230. Its totient is φ = 859638228.

The previous prime is 859638203. The next prime is 859638233. The reversal of 859638229 is 922836958.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 789497604 + 70140625 = 28098^2 + 8375^2 .

It is a cyclic number.

It is not a de Polignac number, because 859638229 - 2¹⁷ = 859507157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (859638239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429819114 + 429819115.

It is an arithmetic number, because the mean of its divisors is an integer number (429819115).

Almost surely, 2^859638229 is an apocalyptic number.

It is an amenable number.

859638229 is a deficient number, since it is larger than the sum of its proper divisors (1).

859638229 is an equidigital number, since it uses as much as digits as its factorization.

859638229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 52.

The square root of 859638229 is about 29319.5878040603. The cubic root of 859638229 is about 950.8351765414.

The spelling of 859638229 in words is "eight hundred fifty-nine million, six hundred thirty-eight thousand, two hundred twenty-nine".