104040217 has 2 divisors, whose sum is σ = 104040218. Its totient is φ = 104040216.

The previous prime is 104040203. The next prime is 104040227. The reversal of 104040217 is 712040401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99780121 + 4260096 = 9989^2 + 2064^2 .

It is a cyclic number.

It is not a de Polignac number, because 104040217 - 2⁷ = 104040089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 104040194 and 104040203.

It is not a weakly prime, because it can be changed into another prime (104040227) 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, 52020108 + 52020109.

It is an arithmetic number, because the mean of its divisors is an integer number (52020109).

Almost surely, 2^104040217 is an apocalyptic number.

It is an amenable number.

104040217 is a deficient number, since it is larger than the sum of its proper divisors (1).

104040217 is an equidigital number, since it uses as much as digits as its factorization.

104040217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 104040217 is about 10200.0106372494. The cubic root of 104040217 is about 470.3275474419.

Adding to 104040217 its reverse (712040401), we get a palindrome (816080618).

The spelling of 104040217 in words is "one hundred four million, forty thousand, two hundred seventeen".