12980455 has 4 divisors (see below), whose sum is σ = 15576552. Its totient is φ = 10384360.

The previous prime is 12980449. The next prime is 12980459. The reversal of 12980455 is 55408921.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12980455 - 2³ = 12980447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12980455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12980459) 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 in 3 ways as a sum of consecutive naturals, for example, 1298041 + ... + 1298050.

It is an arithmetic number, because the mean of its divisors is an integer number (3894138).

Almost surely, 2^12980455 is an apocalyptic number.

12980455 is a deficient number, since it is larger than the sum of its proper divisors (2596097).

12980455 is an equidigital number, since it uses as much as digits as its factorization.

12980455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596096.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 12980455 is about 3602.8398521167. The cubic root of 12980455 is about 235.0155716255.

The spelling of 12980455 in words is "twelve million, nine hundred eighty thousand, four hundred fifty-five".