104459921 has 4 divisors (see below), whose sum is σ = 104547252. Its totient is φ = 104372592.

The previous prime is 104459911. The next prime is 104459933. The reversal of 104459921 is 129954401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 129954401 = 127 ⋅1023263.

It can be written as a sum of positive squares in 2 ways, for example, as 1234321 + 103225600 = 1111^2 + 10160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104459921 is a prime.

It is a super-4 number, since 4×104459921⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104459911) 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, 41846 + ... + 44271.

It is an arithmetic number, because the mean of its divisors is an integer number (26136813).

Almost surely, 2^104459921 is an apocalyptic number.

It is an amenable number.

104459921 is a deficient number, since it is larger than the sum of its proper divisors (87331).

104459921 is an equidigital number, since it uses as much as digits as its factorization.

104459921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87330.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 104459921 is about 10220.5636341642. The cubic root of 104459921 is about 470.9591413688.

The spelling of 104459921 in words is "one hundred four million, four hundred fifty-nine thousand, nine hundred twenty-one".