104207209 has 2 divisors, whose sum is σ = 104207210. Its totient is φ = 104207208.

The previous prime is 104207171. The next prime is 104207219. The reversal of 104207209 is 902702401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67568400 + 36638809 = 8220^2 + 6053^2 .

It is a cyclic number.

It is not a de Polignac number, because 104207209 - 2¹⁹ = 103682921 is a prime.

It is not a weakly prime, because it can be changed into another prime (104207219) 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, 52103604 + 52103605.

It is an arithmetic number, because the mean of its divisors is an integer number (52103605).

Almost surely, 2^104207209 is an apocalyptic number.

It is an amenable number.

104207209 is a deficient number, since it is larger than the sum of its proper divisors (1).

104207209 is an equidigital number, since it uses as much as digits as its factorization.

104207209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 104207209 is about 10208.1932289705. The cubic root of 104207209 is about 470.5790493970.

The spelling of 104207209 in words is "one hundred four million, two hundred seven thousand, two hundred nine".