100493 has 2 divisors, whose sum is σ = 100494. Its totient is φ = 100492.

The previous prime is 100483. The next prime is 100501. The reversal of 100493 is 394001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100489 + 4 = 317^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 100493 - 2⁸ = 100237 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50246 + 50247.

It is an arithmetic number, because the mean of its divisors is an integer number (50247).

2¹⁰⁰⁴⁹³ is an apocalyptic number.

It is an amenable number.

100493 is a deficient number, since it is larger than the sum of its proper divisors (1).

100493 is an equidigital number, since it uses as much as digits as its factorization.

100493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 100493 is about 317.0063090855. The cubic root of 100493 is about 46.4920401066.

Adding to 100493 its reverse (394001), we get a palindrome (494494).

The spelling of 100493 in words is "one hundred thousand, four hundred ninety-three".