859493 has 2 divisors, whose sum is σ = 859494. Its totient is φ = 859492.

The previous prime is 859477. The next prime is 859513. The reversal of 859493 is 394958.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 850084 + 9409 = 922^2 + 97^2 .

It is a cyclic number.

It is not a de Polignac number, because 859493 - 2⁴ = 859477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (859423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429746 + 429747.

It is an arithmetic number, because the mean of its divisors is an integer number (429747).

2⁸⁵⁹⁴⁹³ is an apocalyptic number.

It is an amenable number.

859493 is a deficient number, since it is larger than the sum of its proper divisors (1).

859493 is an equidigital number, since it uses as much as digits as its factorization.

859493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 38.

The square root of 859493 is about 927.0884531694. The cubic root of 859493 is about 95.0781628194.

The spelling of 859493 in words is "eight hundred fifty-nine thousand, four hundred ninety-three".