12988277 has 2 divisors, whose sum is σ = 12988278. Its totient is φ = 12988276.

The previous prime is 12988273. The next prime is 12988291. The reversal of 12988277 is 77288921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12859396 + 128881 = 3586^2 + 359^2 .

It is a cyclic number.

It is not a de Polignac number, because 12988277 - 2² = 12988273 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 (12988273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6494138 + 6494139.

It is an arithmetic number, because the mean of its divisors is an integer number (6494139).

Almost surely, 2^12988277 is an apocalyptic number.

It is an amenable number.

12988277 is a deficient number, since it is larger than the sum of its proper divisors (1).

12988277 is an equidigital number, since it uses as much as digits as its factorization.

12988277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 44.

The square root of 12988277 is about 3603.9252211998. The cubic root of 12988277 is about 235.0627688070.

The spelling of 12988277 in words is "twelve million, nine hundred eighty-eight thousand, two hundred seventy-seven".