85599847 has 2 divisors, whose sum is σ = 85599848. Its totient is φ = 85599846.

The previous prime is 85599821. The next prime is 85599853. The reversal of 85599847 is 74899558.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85599847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85599817) 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, 42799923 + 42799924.

It is an arithmetic number, because the mean of its divisors is an integer number (42799924).

Almost surely, 2^85599847 is an apocalyptic number.

85599847 is a deficient number, since it is larger than the sum of its proper divisors (1).

85599847 is an equidigital number, since it uses as much as digits as its factorization.

85599847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3628800, while the sum is 55.

The square root of 85599847 is about 9252.0185365141. The cubic root of 85599847 is about 440.7148280686.

The spelling of 85599847 in words is "eighty-five million, five hundred ninety-nine thousand, eight hundred forty-seven".