86185089 has 6 divisors (see below), whose sum is σ = 124489586. Its totient is φ = 57456720.

The previous prime is 86185081. The next prime is 86185091. The reversal of 86185089 is 98058168.

It can be written as a sum of positive squares in only one way, i.e., 84272400 + 1912689 = 9180^2 + 1383^2 .

It is not a de Polignac number, because 86185089 - 2³ = 86185081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86185081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4788052 + ... + 4788069.

Almost surely, 2^86185089 is an apocalyptic number.

It is an amenable number.

86185089 is a deficient number, since it is larger than the sum of its proper divisors (38304497).

86185089 is a wasteful number, since it uses less digits than its factorization.

86185089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9576127 (or 9576124 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 86185089 is about 9283.5924619729. The cubic root of 86185089 is about 441.7169297174.

The spelling of 86185089 in words is "eighty-six million, one hundred eighty-five thousand, eighty-nine".