12946649 has 2 divisors, whose sum is σ = 12946650. Its totient is φ = 12946648.

The previous prime is 12946621. The next prime is 12946651. The reversal of 12946649 is 94664921.

12946649 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9859600 + 3087049 = 3140^2 + 1757^2 .

It is a cyclic number.

It is not a de Polignac number, because 12946649 - 2⁸ = 12946393 is a prime.

Together with 12946651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12946669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6473324 + 6473325.

It is an arithmetic number, because the mean of its divisors is an integer number (6473325).

Almost surely, 2^12946649 is an apocalyptic number.

It is an amenable number.

12946649 is a deficient number, since it is larger than the sum of its proper divisors (1).

12946649 is an equidigital number, since it uses as much as digits as its factorization.

12946649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 41.

The square root of 12946649 is about 3598.1452166359. The cubic root of 12946649 is about 234.8113711920.

The spelling of 12946649 in words is "twelve million, nine hundred forty-six thousand, six hundred forty-nine".