86386989 has 8 divisors (see below), whose sum is σ = 124042912. Its totient is φ = 53161200.

The previous prime is 86386961. The next prime is 86386991. The reversal of 86386989 is 98968368.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86386989 - 2⁸ = 86386733 is a prime.

It is a super-2 number, since 2×86386989² = 14925423736972242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86386999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1107487 + ... + 1107564.

It is an arithmetic number, because the mean of its divisors is an integer number (15505364).

Almost surely, 2^86386989 is an apocalyptic number.

It is an amenable number.

86386989 is a deficient number, since it is larger than the sum of its proper divisors (37655923).

86386989 is a wasteful number, since it uses less digits than its factorization.

86386989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2215067.

The product of its digits is 4478976, while the sum is 57.

The square root of 86386989 is about 9294.4601241815. The cubic root of 86386989 is about 442.0615875498.

The spelling of 86386989 in words is "eighty-six million, three hundred eighty-six thousand, nine hundred eighty-nine".