12957769 has 6 divisors (see below), whose sum is σ = 14242970. Its totient is φ = 11779680.

The previous prime is 12957761. The next prime is 12957781. The reversal of 12957769 is 96775921.

It is a happy number.

12957769 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8497225 + 4460544 = 2915^2 + 2112^2 .

It is not a de Polignac number, because 12957769 - 2³ = 12957761 is a prime.

It is a super-2 number, since 2×12957769² = 335807554914722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12957761) 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 5 ways as a sum of consecutive naturals, for example, 53424 + ... + 53665.

Almost surely, 2^12957769 is an apocalyptic number.

It is an amenable number.

12957769 is a deficient number, since it is larger than the sum of its proper divisors (1285201).

12957769 is a wasteful number, since it uses less digits than its factorization.

12957769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107111 (or 107100 counting only the distinct ones).

The product of its digits is 238140, while the sum is 46.

The square root of 12957769 is about 3599.6901255525. The cubic root of 12957769 is about 234.8785791940.

The spelling of 12957769 in words is "twelve million, nine hundred fifty-seven thousand, seven hundred sixty-nine".