12309479 has 32 divisors (see below), whose sum is σ = 16410240. Its totient is φ = 8957952.

The previous prime is 12309457. The next prime is 12309503. The reversal of 12309479 is 97490321.

It is a cyclic number.

It is not a de Polignac number, because 12309479 - 2¹² = 12305383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12309179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112877 + ... + 112985.

It is an arithmetic number, because the mean of its divisors is an integer number (512820).

Almost surely, 2^12309479 is an apocalyptic number.

12309479 is a deficient number, since it is larger than the sum of its proper divisors (4100761).

12309479 is a wasteful number, since it uses less digits than its factorization.

12309479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 12309479 is about 3508.4867108199. The cubic root of 12309479 is about 230.8943064510.

The spelling of 12309479 in words is "twelve million, three hundred nine thousand, four hundred seventy-nine".