86523329 has 2 divisors, whose sum is σ = 86523330. Its totient is φ = 86523328.

The previous prime is 86523313. The next prime is 86523337. The reversal of 86523329 is 92332568.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82810000 + 3713329 = 9100^2 + 1927^2 .

It is a cyclic number.

It is not a de Polignac number, because 86523329 - 2⁴ = 86523313 is a prime.

It is a super-2 number, since 2×86523329² = 14972572922484482, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 86523292 and 86523301.

It is not a weakly prime, because it can be changed into another prime (86523389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43261664 + 43261665.

It is an arithmetic number, because the mean of its divisors is an integer number (43261665).

Almost surely, 2^86523329 is an apocalyptic number.

It is an amenable number.

86523329 is a deficient number, since it is larger than the sum of its proper divisors (1).

86523329 is an equidigital number, since it uses as much as digits as its factorization.

86523329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 38.

The square root of 86523329 is about 9301.7917091279. The cubic root of 86523329 is about 442.2940260916.

The spelling of 86523329 in words is "eighty-six million, five hundred twenty-three thousand, three hundred twenty-nine".