12773969 has 4 divisors (see below), whose sum is σ = 13756596. Its totient is φ = 11791344.

The previous prime is 12773951. The next prime is 12774029. The reversal of 12773969 is 96937721.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6076225 + 6697744 = 2465^2 + 2588^2 .

It is a cyclic number.

It is not a de Polignac number, because 12773969 - 2¹⁶ = 12708433 is a prime.

It is a super-2 number, since 2×12773969² = 326348568025922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12773269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491294 + ... + 491319.

It is an arithmetic number, because the mean of its divisors is an integer number (3439149).

Almost surely, 2^12773969 is an apocalyptic number.

It is an amenable number.

12773969 is a deficient number, since it is larger than the sum of its proper divisors (982627).

12773969 is an equidigital number, since it uses as much as digits as its factorization.

12773969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982626.

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

The square root of 12773969 is about 3574.0689696759. The cubic root of 12773969 is about 233.7627383032.

The spelling of 12773969 in words is "twelve million, seven hundred seventy-three thousand, nine hundred sixty-nine".