85259843 has 2 divisors, whose sum is σ = 85259844. Its totient is φ = 85259842.

The previous prime is 85259809. The next prime is 85259849. The reversal of 85259843 is 34895258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85259843 - 2¹⁸ = 84997699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85259794 and 85259803.

It is not a weakly prime, because it can be changed into another prime (85259849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42629921 + 42629922.

It is an arithmetic number, because the mean of its divisors is an integer number (42629922).

Almost surely, 2^85259843 is an apocalyptic number.

85259843 is a deficient number, since it is larger than the sum of its proper divisors (1).

85259843 is an equidigital number, since it uses as much as digits as its factorization.

85259843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 44.

The square root of 85259843 is about 9233.6256692591. The cubic root of 85259843 is about 440.1305449421.

The spelling of 85259843 in words is "eighty-five million, two hundred fifty-nine thousand, eight hundred forty-three".