86289813 has 32 divisors (see below), whose sum is σ = 134138880. Its totient is φ = 54719280.

The previous prime is 86289799. The next prime is 86289817. The reversal of 86289813 is 31898268.

86289813 is a `hidden beast` number, since 8 + 628 + 9 + 8 + 13 = 666.

It is not a de Polignac number, because 86289813 - 2¹⁰ = 86288789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86289817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175498 + ... + 175988.

It is an arithmetic number, because the mean of its divisors is an integer number (4191840).

Almost surely, 2^86289813 is an apocalyptic number.

It is an amenable number.

86289813 is a deficient number, since it is larger than the sum of its proper divisors (47849067).

86289813 is a wasteful number, since it uses less digits than its factorization.

86289813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806 (or 800 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 86289813 is about 9289.2310230718. The cubic root of 86289813 is about 441.8957682328.

The spelling of 86289813 in words is "eighty-six million, two hundred eighty-nine thousand, eight hundred thirteen".