86989 has 12 divisors (see below), whose sum is σ = 108064. Its totient is φ = 68544.

The previous prime is 86981. The next prime is 86993. The reversal of 86989 is 98968.

It is a happy number.

It is not a de Polignac number, because 86989 - 2³ = 86981 is a prime.

It is a super-2 number, since 2×86989² = 15134172242, which contains 22 as substring.

It is a Duffinian number.

86989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2002 + ... + 2044.

2⁸⁶⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

86989 is a deficient number, since it is larger than the sum of its proper divisors (21075).

86989 is a wasteful number, since it uses less digits than its factorization.

86989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 67 counting only the distinct ones).

The product of its digits is 31104, while the sum is 40.

The square root of 86989 is about 294.9389767393. The cubic root of 86989 is about 44.3086086469.

The spelling of 86989 in words is "eighty-six thousand, nine hundred eighty-nine".