86229181 has 4 divisors (see below), whose sum is σ = 86399100. Its totient is φ = 86059264.

The previous prime is 86229179. The next prime is 86229193. The reversal of 86229181 is 18192268.

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

It can be written as a sum of positive squares in 2 ways, for example, as 69139225 + 17089956 = 8315^2 + 4134^2 .

It is a cyclic number.

It is not a de Polignac number, because 86229181 - 2¹ = 86229179 is a prime.

It is a super-2 number, since 2×86229181² = 14870943311861522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86229181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86224181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84196 + ... + 85213.

It is an arithmetic number, because the mean of its divisors is an integer number (21599775).

Almost surely, 2^86229181 is an apocalyptic number.

It is an amenable number.

86229181 is a deficient number, since it is larger than the sum of its proper divisors (169919).

86229181 is a wasteful number, since it uses less digits than its factorization.

86229181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169918.

The product of its digits is 13824, while the sum is 37.

The square root of 86229181 is about 9285.9668855752. The cubic root of 86229181 is about 441.7922438377.

The spelling of 86229181 in words is "eighty-six million, two hundred twenty-nine thousand, one hundred eighty-one".