12737969 has 2 divisors, whose sum is σ = 12737970. Its totient is φ = 12737968.

The previous prime is 12737951. The next prime is 12737971. The reversal of 12737969 is 96973721.

It is a happy number.

12737969 is digitally balanced in base 2, because in such base 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., 7507600 + 5230369 = 2740^2 + 2287^2 .

It is a cyclic number.

It is not a de Polignac number, because 12737969 - 2¹² = 12733873 is a prime.

It is a super-2 number, since 2×12737969² = 324511708489922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 12737971, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12737909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6368984 + 6368985.

It is an arithmetic number, because the mean of its divisors is an integer number (6368985).

Almost surely, 2^12737969 is an apocalyptic number.

It is an amenable number.

12737969 is a deficient number, since it is larger than the sum of its proper divisors (1).

12737969 is an equidigital number, since it uses as much as digits as its factorization.

12737969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 44.

The square root of 12737969 is about 3569.0291396961. The cubic root of 12737969 is about 233.5429325261.

The spelling of 12737969 in words is "twelve million, seven hundred thirty-seven thousand, nine hundred sixty-nine".