85306943 has 4 divisors (see below), whose sum is σ = 85631568. Its totient is φ = 84982320.

The previous prime is 85306913. The next prime is 85306957. The reversal of 85306943 is 34960358.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34960358 = 2 ⋅17480179.

It is a cyclic number.

It is not a de Polignac number, because 85306943 - 2²² = 81112639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85306897 and 85306906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85306913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161918 + ... + 162443.

It is an arithmetic number, because the mean of its divisors is an integer number (21407892).

Almost surely, 2^85306943 is an apocalyptic number.

85306943 is a deficient number, since it is larger than the sum of its proper divisors (324625).

85306943 is a wasteful number, since it uses less digits than its factorization.

85306943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324624.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 85306943 is about 9236.1757778856. The cubic root of 85306943 is about 440.2115769645.

The spelling of 85306943 in words is "eighty-five million, three hundred six thousand, nine hundred forty-three".