86529539 has 2 divisors, whose sum is σ = 86529540. Its totient is φ = 86529538.

The previous prime is 86529523. The next prime is 86529551. The reversal of 86529539 is 93592568.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86529539 - 2⁴ = 86529523 is a prime.

It is a super-2 number, since 2×86529539² = 14974722239105042, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 86529493 and 86529502.

It is not a weakly prime, because it can be changed into another prime (86529559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43264769 + 43264770.

It is an arithmetic number, because the mean of its divisors is an integer number (43264770).

Almost surely, 2^86529539 is an apocalyptic number.

86529539 is a deficient number, since it is larger than the sum of its proper divisors (1).

86529539 is an equidigital number, since it uses as much as digits as its factorization.

86529539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 47.

The square root of 86529539 is about 9302.1255097961. The cubic root of 86529539 is about 442.3046073619.

The spelling of 86529539 in words is "eighty-six million, five hundred twenty-nine thousand, five hundred thirty-nine".