85894187 has 2 divisors, whose sum is σ = 85894188. Its totient is φ = 85894186.

The previous prime is 85894163. The next prime is 85894189. The reversal of 85894187 is 78149858.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85894187 - 2¹⁶ = 85828651 is a prime.

It is a super-3 number, since 3×85894187³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 85894189, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (85894189) 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, 42947093 + 42947094.

It is an arithmetic number, because the mean of its divisors is an integer number (42947094).

Almost surely, 2^85894187 is an apocalyptic number.

85894187 is a deficient number, since it is larger than the sum of its proper divisors (1).

85894187 is an equidigital number, since it uses as much as digits as its factorization.

85894187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 50.

The square root of 85894187 is about 9267.9116849482. The cubic root of 85894187 is about 441.2193912860.

The spelling of 85894187 in words is "eighty-five million, eight hundred ninety-four thousand, one hundred eighty-seven".