104873821 has 4 divisors (see below), whose sum is σ = 112941052. Its totient is φ = 96806592.

The previous prime is 104873809. The next prime is 104873849. The reversal of 104873821 is 128378401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 128378401 = 5407 ⋅23743.

It can be written as a sum of positive squares in 2 ways, for example, as 42068196 + 62805625 = 6486^2 + 7925^2 .

It is a cyclic number.

It is not a de Polignac number, because 104873821 - 2¹⁷ = 104742749 is a prime.

It is a super-2 number, since 2×104873821² = 21997036662280082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104873921) 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, 4033596 + ... + 4033621.

It is an arithmetic number, because the mean of its divisors is an integer number (28235263).

Almost surely, 2^104873821 is an apocalyptic number.

It is an amenable number.

104873821 is a deficient number, since it is larger than the sum of its proper divisors (8067231).

104873821 is an equidigital number, since it uses as much as digits as its factorization.

104873821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8067230.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 104873821 is about 10240.7920103867. The cubic root of 104873821 is about 471.5803464393.

The spelling of 104873821 in words is "one hundred four million, eight hundred seventy-three thousand, eight hundred twenty-one".