304912109 has 4 divisors (see below), whose sum is σ = 309463104. Its totient is φ = 300361116.

The previous prime is 304912073. The next prime is 304912117. The reversal of 304912109 is 901219403.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 901219403 = 7 ⋅128745629.

It is a cyclic number.

It is not a de Polignac number, because 304912109 - 2⁸ = 304911853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304912159) 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, 2275397 + ... + 2275530.

It is an arithmetic number, because the mean of its divisors is an integer number (77365776).

Almost surely, 2^304912109 is an apocalyptic number.

It is an amenable number.

304912109 is a deficient number, since it is larger than the sum of its proper divisors (4550995).

304912109 is an equidigital number, since it uses as much as digits as its factorization.

304912109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4550994.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 304912109 is about 17461.7327032571. The cubic root of 304912109 is about 673.0668853672.

The spelling of 304912109 in words is "three hundred four million, nine hundred twelve thousand, one hundred nine".