104912189 has 2 divisors, whose sum is σ = 104912190. Its totient is φ = 104912188.

The previous prime is 104912183. The next prime is 104912209. The reversal of 104912189 is 981219401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89624089 + 15288100 = 9467^2 + 3910^2 .

It is a cyclic number.

It is not a de Polignac number, because 104912189 - 2¹² = 104908093 is a prime.

It is a super-2 number, since 2×104912189² = 22013134801543442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104912183) 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, 52456094 + 52456095.

It is an arithmetic number, because the mean of its divisors is an integer number (52456095).

Almost surely, 2^104912189 is an apocalyptic number.

It is an amenable number.

104912189 is a deficient number, since it is larger than the sum of its proper divisors (1).

104912189 is an equidigital number, since it uses as much as digits as its factorization.

104912189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 104912189 is about 10242.6651316930. The cubic root of 104912189 is about 471.6378485197.

The spelling of 104912189 in words is "one hundred four million, nine hundred twelve thousand, one hundred eighty-nine".