86579943 has 4 divisors (see below), whose sum is σ = 115439928. Its totient is φ = 57719960.

The previous prime is 86579939. The next prime is 86579953. The reversal of 86579943 is 34997568.

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 86579943 - 2² = 86579939 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86579953) 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, 14429988 + ... + 14429993.

It is an arithmetic number, because the mean of its divisors is an integer number (28859982).

Almost surely, 2^86579943 is an apocalyptic number.

86579943 is a deficient number, since it is larger than the sum of its proper divisors (28859985).

86579943 is a wasteful number, since it uses less digits than its factorization.

86579943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28859984.

The product of its digits is 1632960, while the sum is 51.

The square root of 86579943 is about 9304.8343886391. The cubic root of 86579943 is about 442.3904724291.

It can be divided in two parts, 865 and 79943, that added together give a palindrome (80808).

The spelling of 86579943 in words is "eighty-six million, five hundred seventy-nine thousand, nine hundred forty-three".