86809471 has 8 divisors (see below), whose sum is σ = 100234400. Its totient is φ = 73640448.

The previous prime is 86809433. The next prime is 86809493. The reversal of 86809471 is 17490868.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86809471 - 2¹³ = 86801279 is a prime.

It is a super-3 number, since 3×86809471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86800471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63246 + ... + 64603.

It is an arithmetic number, because the mean of its divisors is an integer number (12529300).

Almost surely, 2^86809471 is an apocalyptic number.

86809471 is a deficient number, since it is larger than the sum of its proper divisors (13424929).

86809471 is a wasteful number, since it uses less digits than its factorization.

86809471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127953.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 86809471 is about 9317.1600286783. The cubic root of 86809471 is about 442.7810609749.

The spelling of 86809471 in words is "eighty-six million, eight hundred nine thousand, four hundred seventy-one".