12889307 has 4 divisors (see below), whose sum is σ = 12898320. Its totient is φ = 12880296.

The previous prime is 12889301. The next prime is 12889309. The reversal of 12889307 is 70398821.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 70398821 = 2113 ⋅33317.

It is a cyclic number.

It is not a de Polignac number, because 12889307 - 2⁴ = 12889291 is a prime.

It is a super-2 number, since 2×12889307² = 332268469880498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12889301) 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 in 3 ways as a sum of consecutive naturals, for example, 1832 + ... + 5397.

It is an arithmetic number, because the mean of its divisors is an integer number (3224580).

Almost surely, 2^12889307 is an apocalyptic number.

12889307 is a deficient number, since it is larger than the sum of its proper divisors (9013).

12889307 is an equidigital number, since it uses as much as digits as its factorization.

12889307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9012.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 12889307 is about 3590.1681019139. The cubic root of 12889307 is about 234.4641904576.

The spelling of 12889307 in words is "twelve million, eight hundred eighty-nine thousand, three hundred seven".