104309891 has 8 divisors (see below), whose sum is σ = 119280480. Its totient is φ = 89356608.

The previous prime is 104309857. The next prime is 104309893. The reversal of 104309891 is 198903401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104309891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104309893) 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 in 7 ways as a sum of consecutive naturals, for example, 13505 + ... + 19773.

It is an arithmetic number, because the mean of its divisors is an integer number (14910060).

Almost surely, 2^104309891 is an apocalyptic number.

104309891 is a deficient number, since it is larger than the sum of its proper divisors (14970589).

104309891 is an equidigital number, since it uses as much as digits as its factorization.

104309891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8653.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 104309891 is about 10213.2213821105. The cubic root of 104309891 is about 470.7335624938.

The spelling of 104309891 in words is "one hundred four million, three hundred nine thousand, eight hundred ninety-one".