12969949 has 2 divisors, whose sum is σ = 12969950. Its totient is φ = 12969948.

The previous prime is 12969947. The next prime is 12969977. The reversal of 12969949 is 94996921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11799225 + 1170724 = 3435^2 + 1082^2 .

It is an emirp because it is prime and its reverse (94996921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12969949 - 2¹ = 12969947 is a prime.

Together with 12969947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12969941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6484974 + 6484975.

It is an arithmetic number, because the mean of its divisors is an integer number (6484975).

Almost surely, 2^12969949 is an apocalyptic number.

It is an amenable number.

12969949 is a deficient number, since it is larger than the sum of its proper divisors (1).

12969949 is an equidigital number, since it uses as much as digits as its factorization.

12969949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 49.

The square root of 12969949 is about 3601.3815404647. The cubic root of 12969949 is about 234.9521496055.

The spelling of 12969949 in words is "twelve million, nine hundred sixty-nine thousand, nine hundred forty-nine".