104443921 has 2 divisors, whose sum is σ = 104443922. Its totient is φ = 104443920.

The previous prime is 104443907. The next prime is 104443967. The reversal of 104443921 is 129344401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74632321 + 29811600 = 8639^2 + 5460^2 .

It is an emirp because it is prime and its reverse (129344401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104443921 - 2⁷ = 104443793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 104443921.

It is not a weakly prime, because it can be changed into another prime (104443901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52221960 + 52221961.

It is an arithmetic number, because the mean of its divisors is an integer number (52221961).

Almost surely, 2^104443921 is an apocalyptic number.

It is an amenable number.

104443921 is a deficient number, since it is larger than the sum of its proper divisors (1).

104443921 is an equidigital number, since it uses as much as digits as its factorization.

104443921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 104443921 is about 10219.7808684922. The cubic root of 104443921 is about 470.9350947266.

It can be divided in two parts, 10444 and 3921, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 104443921 in words is "one hundred four million, four hundred forty-three thousand, nine hundred twenty-one".