12984157 has 2 divisors, whose sum is σ = 12984158. Its totient is φ = 12984156.

The previous prime is 12984149. The next prime is 12984193. The reversal of 12984157 is 75148921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12773476 + 210681 = 3574^2 + 459^2 .

It is a cyclic number.

It is not a de Polignac number, because 12984157 - 2³ = 12984149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12984457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6492078 + 6492079.

It is an arithmetic number, because the mean of its divisors is an integer number (6492079).

Almost surely, 2^12984157 is an apocalyptic number.

It is an amenable number.

12984157 is a deficient number, since it is larger than the sum of its proper divisors (1).

12984157 is an equidigital number, since it uses as much as digits as its factorization.

12984157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 37.

The square root of 12984157 is about 3603.3535768781. The cubic root of 12984157 is about 235.0379114934.

The spelling of 12984157 in words is "twelve million, nine hundred eighty-four thousand, one hundred fifty-seven".