85993843 has 4 divisors (see below), whose sum is σ = 92608768. Its totient is φ = 79378920.

The previous prime is 85993807. The next prime is 85993891. The reversal of 85993843 is 34839958.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85993843 - 2⁹ = 85993331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85999843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3307443 + ... + 3307468.

It is an arithmetic number, because the mean of its divisors is an integer number (23152192).

Almost surely, 2^85993843 is an apocalyptic number.

85993843 is a deficient number, since it is larger than the sum of its proper divisors (6614925).

85993843 is a wasteful number, since it uses less digits than its factorization.

85993843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6614924.

The product of its digits is 933120, while the sum is 49.

The square root of 85993843 is about 9273.2865263616. The cubic root of 85993843 is about 441.3899622608.

The spelling of 85993843 in words is "eighty-five million, nine hundred ninety-three thousand, eight hundred forty-three".