12406393 has 2 divisors, whose sum is σ = 12406394. Its totient is φ = 12406392.

The previous prime is 12406391. The next prime is 12406421. The reversal of 12406393 is 39360421.

It is an a-pointer prime, because the next prime (12406421) can be obtained adding 12406393 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8133904 + 4272489 = 2852^2 + 2067^2 .

It is a cyclic number.

It is not a de Polignac number, because 12406393 - 2¹ = 12406391 is a prime.

Together with 12406391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12406391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6203196 + 6203197.

It is an arithmetic number, because the mean of its divisors is an integer number (6203197).

Almost surely, 2^12406393 is an apocalyptic number.

It is an amenable number.

12406393 is a deficient number, since it is larger than the sum of its proper divisors (1).

12406393 is an equidigital number, since it uses as much as digits as its factorization.

12406393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 12406393 is about 3522.2710003633. The cubic root of 12406393 is about 231.4986759515.

The spelling of 12406393 in words is "twelve million, four hundred six thousand, three hundred ninety-three".