12855407 has 2 divisors, whose sum is σ = 12855408. Its totient is φ = 12855406.

The previous prime is 12855389. The next prime is 12855449. The reversal of 12855407 is 70455821.

It is a weak prime.

It is an emirp because it is prime and its reverse (70455821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12855407 - 2¹⁰ = 12854383 is a prime.

It is a super-2 number, since 2×12855407² = 330522978271298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12855107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6427703 + 6427704.

It is an arithmetic number, because the mean of its divisors is an integer number (6427704).

Almost surely, 2^12855407 is an apocalyptic number.

12855407 is a deficient number, since it is larger than the sum of its proper divisors (1).

12855407 is an equidigital number, since it uses as much as digits as its factorization.

12855407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 12855407 is about 3585.4437661188. The cubic root of 12855407 is about 234.2584562386.

The spelling of 12855407 in words is "twelve million, eight hundred fifty-five thousand, four hundred seven".