12466381 has 2 divisors, whose sum is σ = 12466382. Its totient is φ = 12466380.

The previous prime is 12466367. The next prime is 12466397. The reversal of 12466381 is 18366421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11594025 + 872356 = 3405^2 + 934^2 .

It is an emirp because it is prime and its reverse (18366421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12466381 - 2¹⁹ = 11942093 is a prime.

It is a super-2 number, since 2×12466381² = 310821310474322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12466301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6233190 + 6233191.

It is an arithmetic number, because the mean of its divisors is an integer number (6233191).

Almost surely, 2^12466381 is an apocalyptic number.

It is an amenable number.

12466381 is a deficient number, since it is larger than the sum of its proper divisors (1).

12466381 is an equidigital number, since it uses as much as digits as its factorization.

12466381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 12466381 is about 3530.7762602578. The cubic root of 12466381 is about 231.8711941069.

The spelling of 12466381 in words is "twelve million, four hundred sixty-six thousand, three hundred eighty-one".