12409471 has 2 divisors, whose sum is σ = 12409472. Its totient is φ = 12409470.

The previous prime is 12409459. The next prime is 12409519. The reversal of 12409471 is 17490421.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12409471 is a prime.

It is a super-3 number, since 3×12409471³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12409421) 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 as a sum of consecutive naturals, namely, 6204735 + 6204736.

It is an arithmetic number, because the mean of its divisors is an integer number (6204736).

Almost surely, 2^12409471 is an apocalyptic number.

12409471 is a deficient number, since it is larger than the sum of its proper divisors (1).

12409471 is an equidigital number, since it uses as much as digits as its factorization.

12409471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 12409471 is about 3522.7079072781. The cubic root of 12409471 is about 231.5178191466.

Adding to 12409471 its reverse (17490421), we get a palindrome (29899892).

It can be divided in two parts, 12409 and 471, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 12409471 in words is "twelve million, four hundred nine thousand, four hundred seventy-one".