86960509 has 2 divisors, whose sum is σ = 86960510. Its totient is φ = 86960508.

The previous prime is 86960507. The next prime is 86960567. The reversal of 86960509 is 90506968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78375609 + 8584900 = 8853^2 + 2930^2 .

It is a cyclic number.

It is not a de Polignac number, because 86960509 - 2¹ = 86960507 is a prime.

It is a super-3 number, since 3×86960509³ (a number of 25 digits) contains 333 as substring.

Together with 86960507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86960501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43480254 + 43480255.

It is an arithmetic number, because the mean of its divisors is an integer number (43480255).

Almost surely, 2^86960509 is an apocalyptic number.

It is an amenable number.

86960509 is a deficient number, since it is larger than the sum of its proper divisors (1).

86960509 is an equidigital number, since it uses as much as digits as its factorization.

86960509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 86960509 is about 9325.2618729985. The cubic root of 86960509 is about 443.0377073859.

The spelling of 86960509 in words is "eighty-six million, nine hundred sixty thousand, five hundred nine".