86871319 has 4 divisors (see below), whose sum is σ = 87150960. Its totient is φ = 86591680.

The previous prime is 86871271. The next prime is 86871347. The reversal of 86871319 is 91317868.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86871319 - 2²¹ = 84774167 is a prime.

It is a super-2 number, since 2×86871319² = 15093252129599522, 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 (86871359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139354 + ... + 139975.

It is an arithmetic number, because the mean of its divisors is an integer number (21787740).

Almost surely, 2^86871319 is an apocalyptic number.

86871319 is a deficient number, since it is larger than the sum of its proper divisors (279641).

86871319 is a wasteful number, since it uses less digits than its factorization.

86871319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279640.

The product of its digits is 72576, while the sum is 43.

The square root of 86871319 is about 9320.4784748424. The cubic root of 86871319 is about 442.8861901417.

The spelling of 86871319 in words is "eighty-six million, eight hundred seventy-one thousand, three hundred nineteen".