85844847 has 32 divisors (see below), whose sum is σ = 129314304. Its totient is φ = 50198400.

The previous prime is 85844827. The next prime is 85844867. The reversal of 85844847 is 74844858.

It is an interprime number because it is at equal distance from previous prime (85844827) and next prime (85844867).

It is not a de Polignac number, because 85844847 - 2⁷ = 85844719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85844796 and 85844805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85844807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203697 + ... + 204117.

It is an arithmetic number, because the mean of its divisors is an integer number (4041072).

Almost surely, 2^85844847 is an apocalyptic number.

85844847 is a deficient number, since it is larger than the sum of its proper divisors (43469457).

85844847 is a wasteful number, since it uses less digits than its factorization.

85844847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639.

The product of its digits is 1146880, while the sum is 48.

The square root of 85844847 is about 9265.2494299938. The cubic root of 85844847 is about 441.1348922249.

It can be divided in two parts, 8584 and 4847, that added together give a palindrome (13431).

The spelling of 85844847 in words is "eighty-five million, eight hundred forty-four thousand, eight hundred forty-seven".