104217709 has 2 divisors, whose sum is σ = 104217710. Its totient is φ = 104217708.

The previous prime is 104217703. The next prime is 104217719. The reversal of 104217709 is 907712401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79744900 + 24472809 = 8930^2 + 4947^2 .

It is a cyclic number.

It is not a de Polignac number, because 104217709 - 2²³ = 95829101 is a prime.

It is a super-2 number, since 2×104217709² = 21722661738417362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104217703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52108854 + 52108855.

It is an arithmetic number, because the mean of its divisors is an integer number (52108855).

Almost surely, 2^104217709 is an apocalyptic number.

It is an amenable number.

104217709 is a deficient number, since it is larger than the sum of its proper divisors (1).

104217709 is an equidigital number, since it uses as much as digits as its factorization.

104217709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 104217709 is about 10208.7075087888. The cubic root of 104217709 is about 470.5948541707.

The spelling of 104217709 in words is "one hundred four million, two hundred seventeen thousand, seven hundred nine".