108306493 has 4 divisors (see below), whose sum is σ = 108441180. Its totient is φ = 108171808.

The previous prime is 108306487. The next prime is 108306521. The reversal of 108306493 is 394603801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 394603801 = 23 ⋅17156687.

It can be written as a sum of positive squares in 2 ways, for example, as 82682649 + 25623844 = 9093^2 + 5062^2 .

It is a cyclic number.

It is not a de Polignac number, because 108306493 - 2¹⁷ = 108175421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108306413) 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 in 3 ways as a sum of consecutive naturals, for example, 66130 + ... + 67747.

It is an arithmetic number, because the mean of its divisors is an integer number (27110295).

Almost surely, 2^108306493 is an apocalyptic number.

It is an amenable number.

108306493 is a deficient number, since it is larger than the sum of its proper divisors (134687).

108306493 is an equidigital number, since it uses as much as digits as its factorization.

108306493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134686.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 108306493 is about 10407.0405495511. The cubic root of 108306493 is about 476.6703783650.

The spelling of 108306493 in words is "one hundred eight million, three hundred six thousand, four hundred ninety-three".