86418559 has 2 divisors, whose sum is σ = 86418560. Its totient is φ = 86418558.

The previous prime is 86418491. The next prime is 86418583. The reversal of 86418559 is 95581468.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86418559 - 2⁹ = 86418047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86412559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43209279 + 43209280.

It is an arithmetic number, because the mean of its divisors is an integer number (43209280).

Almost surely, 2^86418559 is an apocalyptic number.

86418559 is a deficient number, since it is larger than the sum of its proper divisors (1).

86418559 is an equidigital number, since it uses as much as digits as its factorization.

86418559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 46.

The square root of 86418559 is about 9296.1582925421. The cubic root of 86418559 is about 442.1154312469.

The spelling of 86418559 in words is "eighty-six million, four hundred eighteen thousand, five hundred fifty-nine".