86193493 has 2 divisors, whose sum is σ = 86193494. Its totient is φ = 86193492.

The previous prime is 86193473. The next prime is 86193511. The reversal of 86193493 is 39439168.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60559524 + 25633969 = 7782^2 + 5063^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86193493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86193403) 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, 43096746 + 43096747.

It is an arithmetic number, because the mean of its divisors is an integer number (43096747).

Almost surely, 2^86193493 is an apocalyptic number.

It is an amenable number.

86193493 is a deficient number, since it is larger than the sum of its proper divisors (1).

86193493 is an equidigital number, since it uses as much as digits as its factorization.

86193493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 43.

The square root of 86193493 is about 9284.0450774433. The cubic root of 86193493 is about 441.7312866805.

The spelling of 86193493 in words is "eighty-six million, one hundred ninety-three thousand, four hundred ninety-three".