12474509 has 2 divisors, whose sum is σ = 12474510. Its totient is φ = 12474508.

The previous prime is 12474503. The next prime is 12474541. The reversal of 12474509 is 90547421.

It is a happy number.

It is an a-pointer prime, because the next prime (12474541) can be obtained adding 12474509 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10745284 + 1729225 = 3278^2 + 1315^2 .

It is a cyclic number.

It is not a de Polignac number, because 12474509 - 2¹⁶ = 12408973 is a prime.

It is a super-3 number, since 3×12474509³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12474503) 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 as a sum of consecutive naturals, namely, 6237254 + 6237255.

It is an arithmetic number, because the mean of its divisors is an integer number (6237255).

Almost surely, 2^12474509 is an apocalyptic number.

It is an amenable number.

12474509 is a deficient number, since it is larger than the sum of its proper divisors (1).

12474509 is an equidigital number, since it uses as much as digits as its factorization.

12474509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 12474509 is about 3531.9270943778. The cubic root of 12474509 is about 231.9215759999.

It can be divided in two parts, 12474 and 509, that multiplied together give a triangular number (6349266 = T₃₅₆₃).

The spelling of 12474509 in words is "twelve million, four hundred seventy-four thousand, five hundred nine".