85939143 has 4 divisors (see below), whose sum is σ = 114585528. Its totient is φ = 57292760.

The previous prime is 85939127. The next prime is 85939207. The reversal of 85939143 is 34193958.

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 85939143 - 2⁴ = 85939127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85939095 and 85939104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85939043) 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, 14323188 + ... + 14323193.

It is an arithmetic number, because the mean of its divisors is an integer number (28646382).

Almost surely, 2^85939143 is an apocalyptic number.

85939143 is a deficient number, since it is larger than the sum of its proper divisors (28646385).

85939143 is a wasteful number, since it uses less digits than its factorization.

85939143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28646384.

The product of its digits is 116640, while the sum is 42.

The square root of 85939143 is about 9270.3367252759. The cubic root of 85939143 is about 441.2963541947.

The spelling of 85939143 in words is "eighty-five million, nine hundred thirty-nine thousand, one hundred forty-three".