12959669 has 2 divisors, whose sum is σ = 12959670. Its totient is φ = 12959668.

The previous prime is 12959663. The next prime is 12959677. The reversal of 12959669 is 96695921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12517444 + 442225 = 3538^2 + 665^2 .

It is a cyclic number.

It is not a de Polignac number, because 12959669 - 2⁸ = 12959413 is a prime.

It is a super-2 number, since 2×12959669² = 335906041179122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12959663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6479834 + 6479835.

It is an arithmetic number, because the mean of its divisors is an integer number (6479835).

Almost surely, 2^12959669 is an apocalyptic number.

It is an amenable number.

12959669 is a deficient number, since it is larger than the sum of its proper divisors (1).

12959669 is an equidigital number, since it uses as much as digits as its factorization.

12959669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440, while the sum is 47.

The square root of 12959669 is about 3599.9540274842. The cubic root of 12959669 is about 234.8900587290.

The spelling of 12959669 in words is "twelve million, nine hundred fifty-nine thousand, six hundred sixty-nine".