86309329 has 2 divisors, whose sum is σ = 86309330. Its totient is φ = 86309328.

The previous prime is 86309297. The next prime is 86309347. The reversal of 86309329 is 92390368.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79923600 + 6385729 = 8940^2 + 2527^2 .

It is a cyclic number.

It is not a de Polignac number, because 86309329 - 2⁵ = 86309297 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 86309291 and 86309300.

It is not a weakly prime, because it can be changed into another prime (86309359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43154664 + 43154665.

It is an arithmetic number, because the mean of its divisors is an integer number (43154665).

Almost surely, 2^86309329 is an apocalyptic number.

It is an amenable number.

86309329 is a deficient number, since it is larger than the sum of its proper divisors (1).

86309329 is an equidigital number, since it uses as much as digits as its factorization.

86309329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 86309329 is about 9290.2814273842. The cubic root of 86309329 is about 441.9290799585.

The spelling of 86309329 in words is "eighty-six million, three hundred nine thousand, three hundred twenty-nine".