86788269 has 18 divisors (see below), whose sum is σ = 131055470. Its totient is φ = 55340208.

The previous prime is 86788243. The next prime is 86788279. The reversal of 86788269 is 96288768.

It can be written as a sum of positive squares in only one way, i.e., 86769225 + 19044 = 9315^2 + 138^2 .

It is not a de Polignac number, because 86788269 - 2¹¹ = 86786221 is a prime.

It is a super-2 number, since 2×86788269² = 15064407272032722, 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 (86788279) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4354 + ... + 13875.

Almost surely, 2^86788269 is an apocalyptic number.

It is an amenable number.

86788269 is a deficient number, since it is larger than the sum of its proper divisors (44267201).

86788269 is a wasteful number, since it uses less digits than its factorization.

86788269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18281 (or 18255 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 86788269 is about 9316.0221661394. The cubic root of 86788269 is about 442.7450103446.

The spelling of 86788269 in words is "eighty-six million, seven hundred eighty-eight thousand, two hundred sixty-nine".