85859971 has 2 divisors, whose sum is σ = 85859972. Its totient is φ = 85859970.

The previous prime is 85859957. The next prime is 85860037. The reversal of 85859971 is 17995858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85859971 - 2¹¹ = 85857923 is a prime.

It is not a weakly prime, because it can be changed into another prime (85859951) 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, 42929985 + 42929986.

It is an arithmetic number, because the mean of its divisors is an integer number (42929986).

Almost surely, 2^85859971 is an apocalyptic number.

85859971 is a deficient number, since it is larger than the sum of its proper divisors (1).

85859971 is an equidigital number, since it uses as much as digits as its factorization.

85859971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 52.

The square root of 85859971 is about 9266.0655620387. The cubic root of 85859971 is about 441.1607968368.

The spelling of 85859971 in words is "eighty-five million, eight hundred fifty-nine thousand, nine hundred seventy-one".