86589991 has 6 divisors (see below), whose sum is σ = 88755176. Its totient is φ = 84476400.

The previous prime is 86589983. The next prime is 86590013. The reversal of 86589991 is 19998568.

It is not a de Polignac number, because 86589991 - 2³ = 86589983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86589961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24075 + ... + 27436.

Almost surely, 2^86589991 is an apocalyptic number.

86589991 is a deficient number, since it is larger than the sum of its proper divisors (2165185).

86589991 is an equidigital number, since it uses as much as digits as its factorization.

86589991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51593 (or 51552 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 55.

The square root of 86589991 is about 9305.3743073559. The cubic root of 86589991 is about 442.4075855825.

The spelling of 86589991 in words is "eighty-six million, five hundred eighty-nine thousand, nine hundred ninety-one".