859423 has 2 divisors, whose sum is σ = 859424. Its totient is φ = 859422.
The previous prime is 859393. The next prime is 859433. The reversal of 859423 is 324958.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 859423 - 29 = 858911 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (859433) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429711 + 429712.
It is an arithmetic number, because the mean of its divisors is an integer number (429712).
859423 is a Friedman number, since it can be written as 95^3+8^4/2, using all its digits and the basic arithmetic operations.
2859423 is an apocalyptic number.
859423 is a deficient number, since it is larger than the sum of its proper divisors (1).
859423 is an equidigital number, since it uses as much as digits as its factorization.
859423 is an evil number, because the sum of its binary digits is even.
The product of its digits is 8640, while the sum is 31.
The square root of 859423 is about 927.0506998002. The cubic root of 859423 is about 95.0755815876.
The spelling of 859423 in words is "eight hundred fifty-nine thousand, four hundred twenty-three".
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