104884409921 has 4 divisors (see below), whose sum is σ = 105020095572. Its totient is φ = 104748724272.

The previous prime is 104884409909. The next prime is 104884409923. The reversal of 104884409921 is 129904488401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2637952321 + 102246457600 = 51361^2 + 319760^2 .

It is a cyclic number.

It is not a de Polignac number, because 104884409921 - 2⁶ = 104884409857 is a prime.

It is a super-2 number, since 2×104884409921² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104884409921.

It is not an unprimeable number, because it can be changed into a prime (104884409923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67841666 + ... + 67843211.

It is an arithmetic number, because the mean of its divisors is an integer number (26255023893).

Almost surely, 2^104884409921 is an apocalyptic number.

It is an amenable number.

104884409921 is a deficient number, since it is larger than the sum of its proper divisors (135685651).

104884409921 is an equidigital number, since it uses as much as digits as its factorization.

104884409921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135685650.

The product of its (nonzero) digits is 663552, while the sum is 50.

The spelling of 104884409921 in words is "one hundred four billion, eight hundred eighty-four million, four hundred nine thousand, nine hundred twenty-one".