12918069 has 32 divisors (see below), whose sum is σ = 20051840. Its totient is φ = 8211456.

The previous prime is 12918049. The next prime is 12918089. The reversal of 12918069 is 96081921.

12918069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12918049) and next prime (12918089).

It is not a de Polignac number, because 12918069 - 2⁸ = 12917813 is a prime.

It is a super-2 number, since 2×12918069² = 333753013377522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12918029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66837 + ... + 67029.

It is an arithmetic number, because the mean of its divisors is an integer number (626620).

Almost surely, 2^12918069 is an apocalyptic number.

It is an amenable number.

12918069 is a deficient number, since it is larger than the sum of its proper divisors (7133771).

12918069 is a wasteful number, since it uses less digits than its factorization.

12918069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 12918069 is about 3594.1715317998. The cubic root of 12918069 is about 234.6384602142.

The spelling of 12918069 in words is "twelve million, nine hundred eighteen thousand, sixty-nine".