104917861 has 2 divisors, whose sum is σ = 104917862. Its totient is φ = 104917860.

The previous prime is 104917849. The next prime is 104917889. The reversal of 104917861 is 168719401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104550625 + 367236 = 10225^2 + 606^2 .

It is a cyclic number.

It is not a de Polignac number, because 104917861 - 2⁹ = 104917349 is a prime.

It is a super-2 number, since 2×104917861² = 22015515113630642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 104917861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104917661) 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, 52458930 + 52458931.

It is an arithmetic number, because the mean of its divisors is an integer number (52458931).

Almost surely, 2^104917861 is an apocalyptic number.

It is an amenable number.

104917861 is a deficient number, since it is larger than the sum of its proper divisors (1).

104917861 is an equidigital number, since it uses as much as digits as its factorization.

104917861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 104917861 is about 10242.9420090128. The cubic root of 104917861 is about 471.6463479505.

The spelling of 104917861 in words is "one hundred four million, nine hundred seventeen thousand, eight hundred sixty-one".