104205309 has 8 divisors (see below), whose sum is σ = 149628192. Its totient is φ = 64126320.

The previous prime is 104205307. The next prime is 104205337. The reversal of 104205309 is 903502401.

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

It is not a de Polignac number, because 104205309 - 2¹ = 104205307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104205307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1335927 + ... + 1336004.

It is an arithmetic number, because the mean of its divisors is an integer number (18703524).

Almost surely, 2^104205309 is an apocalyptic number.

It is an amenable number.

104205309 is a deficient number, since it is larger than the sum of its proper divisors (45422883).

104205309 is a wasteful number, since it uses less digits than its factorization.

104205309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671947.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 104205309 is about 10208.1001660446. The cubic root of 104205309 is about 470.5761893721.

The spelling of 104205309 in words is "one hundred four million, two hundred five thousand, three hundred nine".