104919909 has 4 divisors (see below), whose sum is σ = 139893216. Its totient is φ = 69946604.

The previous prime is 104919889. The next prime is 104919959. The reversal of 104919909 is 909919401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 104919909 - 2⁷ = 104919781 is a prime.

It is a super-2 number, since 2×104919909² = 22016374609136562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104919959) 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 3 ways as a sum of consecutive naturals, for example, 17486649 + ... + 17486654.

It is an arithmetic number, because the mean of its divisors is an integer number (34973304).

Almost surely, 2^104919909 is an apocalyptic number.

It is an amenable number.

104919909 is a deficient number, since it is larger than the sum of its proper divisors (34973307).

104919909 is an equidigital number, since it uses as much as digits as its factorization.

104919909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34973306.

The product of its (nonzero) digits is 26244, while the sum is 42.

The square root of 104919909 is about 10243.0419798027. The cubic root of 104919909 is about 471.6494167812.

The spelling of 104919909 in words is "one hundred four million, nine hundred nineteen thousand, nine hundred nine".