12940969 has 2 divisors, whose sum is σ = 12940970. Its totient is φ = 12940968.

The previous prime is 12940951. The next prime is 12940987. The reversal of 12940969 is 96904921.

It is a balanced prime because it is at equal distance from previous prime (12940951) and next prime (12940987).

It can be written as a sum of positive squares in only one way, i.e., 8779369 + 4161600 = 2963^2 + 2040^2 .

It is a cyclic number.

It is not a de Polignac number, because 12940969 - 2⁵ = 12940937 is a prime.

It is a super-2 number, since 2×12940969² = 334937357317922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12940909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6470484 + 6470485.

It is an arithmetic number, because the mean of its divisors is an integer number (6470485).

Almost surely, 2^12940969 is an apocalyptic number.

It is an amenable number.

12940969 is a deficient number, since it is larger than the sum of its proper divisors (1).

12940969 is an equidigital number, since it uses as much as digits as its factorization.

12940969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 12940969 is about 3597.3558344984. The cubic root of 12940969 is about 234.7770270750. Note that the first 3 decimals are identical.

The spelling of 12940969 in words is "twelve million, nine hundred forty thousand, nine hundred sixty-nine".