12984457 has 2 divisors, whose sum is σ = 12984458. Its totient is φ = 12984456.

The previous prime is 12984451. The next prime is 12984463. The reversal of 12984457 is 75448921.

It is a balanced prime because it is at equal distance from previous prime (12984451) and next prime (12984463).

It can be written as a sum of positive squares in only one way, i.e., 9960336 + 3024121 = 3156^2 + 1739^2 .

It is an emirp because it is prime and its reverse (75448921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12984457 - 2⁷ = 12984329 is a prime.

It is a super-2 number, since 2×12984457² = 337192247169698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12984451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6492228 + 6492229.

It is an arithmetic number, because the mean of its divisors is an integer number (6492229).

Almost surely, 2^12984457 is an apocalyptic number.

It is an amenable number.

12984457 is a deficient number, since it is larger than the sum of its proper divisors (1).

12984457 is an equidigital number, since it uses as much as digits as its factorization.

12984457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 12984457 is about 3603.3952045259. The cubic root of 12984457 is about 235.0397216694.

The spelling of 12984457 in words is "twelve million, nine hundred eighty-four thousand, four hundred fifty-seven".