86509459 has 2 divisors, whose sum is σ = 86509460. Its totient is φ = 86509458.

The previous prime is 86509373. The next prime is 86509477. The reversal of 86509459 is 95490568.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86509459 - 2⁷ = 86509331 is a prime.

It is not a weakly prime, because it can be changed into another prime (86509859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43254729 + 43254730.

It is an arithmetic number, because the mean of its divisors is an integer number (43254730).

Almost surely, 2^86509459 is an apocalyptic number.

86509459 is a deficient number, since it is larger than the sum of its proper divisors (1).

86509459 is an equidigital number, since it uses as much as digits as its factorization.

86509459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 86509459 is about 9301.0461239583. The cubic root of 86509459 is about 442.2703910557.

It can be divided in two parts, 86509 and 459, that added together give a palindrome (86968).

The spelling of 86509459 in words is "eighty-six million, five hundred nine thousand, four hundred fifty-nine".