86503493 has 2 divisors, whose sum is σ = 86503494. Its totient is φ = 86503492.

The previous prime is 86503457. The next prime is 86503507. The reversal of 86503493 is 39430568.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56055169 + 30448324 = 7487^2 + 5518^2 .

It is a cyclic number.

It is not a de Polignac number, because 86503493 - 2¹² = 86499397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86503793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43251746 + 43251747.

It is an arithmetic number, because the mean of its divisors is an integer number (43251747).

Almost surely, 2^86503493 is an apocalyptic number.

It is an amenable number.

86503493 is a deficient number, since it is larger than the sum of its proper divisors (1).

86503493 is an equidigital number, since it uses as much as digits as its factorization.

86503493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 86503493 is about 9300.7254018168. The cubic root of 86503493 is about 442.2602239755.

The spelling of 86503493 in words is "eighty-six million, five hundred three thousand, four hundred ninety-three".