100447 has 2 divisors, whose sum is σ = 100448. Its totient is φ = 100446.

The previous prime is 100417. The next prime is 100459. The reversal of 100447 is 744001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100447 - 2¹⁵ = 67679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50223 + 50224.

It is an arithmetic number, because the mean of its divisors is an integer number (50224).

2¹⁰⁰⁴⁴⁷ is an apocalyptic number.

100447 is a deficient number, since it is larger than the sum of its proper divisors (1).

100447 is an equidigital number, since it uses as much as digits as its factorization.

100447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 100447 is about 316.9337470198. The cubic root of 100447 is about 46.4849452170.

Adding to 100447 its reverse (744001), we get a palindrome (844448).

The spelling of 100447 in words is "one hundred thousand, four hundred forty-seven", and thus it is an iban number.