12467981 has 2 divisors, whose sum is σ = 12467982. Its totient is φ = 12467980.

The previous prime is 12467969. The next prime is 12468007. The reversal of 12467981 is 18976421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12187081 + 280900 = 3491^2 + 530^2 .

It is a cyclic number.

It is not a de Polignac number, because 12467981 - 2¹⁴ = 12451597 is a prime.

It is a super-2 number, since 2×12467981² = 310901100432722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12467911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6233990 + 6233991.

It is an arithmetic number, because the mean of its divisors is an integer number (6233991).

Almost surely, 2^12467981 is an apocalyptic number.

It is an amenable number.

12467981 is a deficient number, since it is larger than the sum of its proper divisors (1).

12467981 is an equidigital number, since it uses as much as digits as its factorization.

12467981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 12467981 is about 3531.0028320578. The cubic root of 12467981 is about 231.8811135331.

The spelling of 12467981 in words is "twelve million, four hundred sixty-seven thousand, nine hundred eighty-one".