86091188 has 12 divisors (see below), whose sum is σ = 152151972. Its totient is φ = 42619200.

The previous prime is 86091151. The next prime is 86091199. The reversal of 86091188 is 88119068.

It can be written as a sum of positive squares in 2 ways, for example, as 84125584 + 1965604 = 9172^2 + 1402^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106145 + ... + 106952.

It is an arithmetic number, because the mean of its divisors is an integer number (12679331).

Almost surely, 2^86091188 is an apocalyptic number.

It is an amenable number.

86091188 is a deficient number, since it is larger than the sum of its proper divisors (66060784).

86091188 is a wasteful number, since it uses less digits than its factorization.

86091188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213202 (or 213200 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 41.

The square root of 86091188 is about 9278.5337203677. The cubic root of 86091188 is about 441.5564505490.

The spelling of 86091188 in words is "eighty-six million, ninety-one thousand, one hundred eighty-eight".