86871889 has 8 divisors (see below), whose sum is σ = 96572672. Its totient is φ = 77602320.

The previous prime is 86871881. The next prime is 86871899. The reversal of 86871889 is 98817868.

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

It is a cyclic number.

It is not a de Polignac number, because 86871889 - 2³ = 86871881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86871881) 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, 107379 + ... + 108184.

It is an arithmetic number, because the mean of its divisors is an integer number (12071584).

Almost surely, 2^86871889 is an apocalyptic number.

It is an amenable number.

86871889 is a deficient number, since it is larger than the sum of its proper divisors (9700783).

86871889 is a wasteful number, since it uses less digits than its factorization.

86871889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215607.

The product of its digits is 1548288, while the sum is 55.

The square root of 86871889 is about 9320.5090526215. The cubic root of 86871889 is about 442.8871587950.

The spelling of 86871889 in words is "eighty-six million, eight hundred seventy-one thousand, eight hundred eighty-nine".