100393 has 2 divisors, whose sum is σ = 100394. Its totient is φ = 100392.
The previous prime is 100391. The next prime is 100403. The reversal of 100393 is 393001.
It is a happy number.
100393 is an esthetic number in base 7, because in such base its adjacent digits differ by 1.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 85264 + 15129 = 292^2 + 123^2 .
It is a cyclic number.
It is not a de Polignac number, because 100393 - 21 = 100391 is a prime.
Together with 100391, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (100391) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50196 + 50197.
It is an arithmetic number, because the mean of its divisors is an integer number (50197).
2100393 is an apocalyptic number.
It is an amenable number.
100393 is a deficient number, since it is larger than the sum of its proper divisors (1).
100393 is an equidigital number, since it uses as much as digits as its factorization.
100393 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 81, while the sum is 16.
The square root of 100393 is about 316.8485442605. The cubic root of 100393 is about 46.4766136690.
Adding to 100393 its reverse (393001), we get a palindrome (493394).
The spelling of 100393 in words is "one hundred thousand, three hundred ninety-three".
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