86531229 has 24 divisors (see below), whose sum is σ = 128606400. Its totient is φ = 56041920.

The previous prime is 86531201. The next prime is 86531231. The reversal of 86531229 is 92213568.

It is not a de Polignac number, because 86531229 - 2⁷ = 86531101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86531193 and 86531202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86531239) 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 23 ways as a sum of consecutive naturals, for example, 46344 + ... + 48174.

It is an arithmetic number, because the mean of its divisors is an integer number (5358600).

Almost surely, 2^86531229 is an apocalyptic number.

86531229 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

86531229 is a deficient number, since it is larger than the sum of its proper divisors (42075171).

86531229 is a wasteful number, since it uses less digits than its factorization.

86531229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985 (or 1982 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 86531229 is about 9302.2163488063. The cubic root of 86531229 is about 442.3074868793.

The spelling of 86531229 in words is "eighty-six million, five hundred thirty-one thousand, two hundred twenty-nine".