12388471 has 2 divisors, whose sum is σ = 12388472. Its totient is φ = 12388470.

The previous prime is 12388463. The next prime is 12388487. The reversal of 12388471 is 17488321.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (17488321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12388471 - 2³ = 12388463 is a prime.

It is a super-3 number, since 3×12388471³ (a number of 22 digits) contains 333 as substring.

It is equal to p₈₁₁₈₈₈ and since 12388471 and 811888 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12383471) 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, 6194235 + 6194236.

It is an arithmetic number, because the mean of its divisors is an integer number (6194236).

Almost surely, 2^12388471 is an apocalyptic number.

12388471 is a deficient number, since it is larger than the sum of its proper divisors (1).

12388471 is an equidigital number, since it uses as much as digits as its factorization.

12388471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 34.

The square root of 12388471 is about 3519.7259836527. The cubic root of 12388471 is about 231.3871496148.

The spelling of 12388471 in words is "twelve million, three hundred eighty-eight thousand, four hundred seventy-one".