86845047 has 4 divisors (see below), whose sum is σ = 115793400. Its totient is φ = 57896696.

The previous prime is 86845039. The next prime is 86845051. The reversal of 86845047 is 74054868.

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 86845047 - 2³ = 86845039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86845007) 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, 14474172 + ... + 14474177.

It is an arithmetic number, because the mean of its divisors is an integer number (28948350).

Almost surely, 2^86845047 is an apocalyptic number.

86845047 is a deficient number, since it is larger than the sum of its proper divisors (28948353).

86845047 is a wasteful number, since it uses less digits than its factorization.

86845047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28948352.

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 86845047 is about 9319.0689985642. The cubic root of 86845047 is about 442.8415391212.

It can be divided in two parts, 8684 and 5047, that added together give a palindrome (13731).

The spelling of 86845047 in words is "eighty-six million, eight hundred forty-five thousand, forty-seven".