12304919 has 4 divisors (see below), whose sum is σ = 13423560. Its totient is φ = 11186280.

The previous prime is 12304907. The next prime is 12304921. The reversal of 12304919 is 91940321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12304919 is a prime.

It is a super-2 number, since 2×12304919² = 302822063193122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12304891 and 12304900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12304949) 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, 559304 + ... + 559325.

It is an arithmetic number, because the mean of its divisors is an integer number (3355890).

Almost surely, 2^12304919 is an apocalyptic number.

12304919 is a deficient number, since it is larger than the sum of its proper divisors (1118641).

12304919 is a wasteful number, since it uses less digits than its factorization.

12304919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118640.

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

The square root of 12304919 is about 3507.8367978000. The cubic root of 12304919 is about 230.8657916217.

The spelling of 12304919 in words is "twelve million, three hundred four thousand, nine hundred nineteen".