12889345 has 16 divisors (see below), whose sum is σ = 17838720. Its totient is φ = 8757504.

The previous prime is 12889339. The next prime is 12889351. The reversal of 12889345 is 54398821.

It is an interprime number because it is at equal distance from previous prime (12889339) and next prime (12889351).

It is not a de Polignac number, because 12889345 - 2³ = 12889337 is a prime.

It is a super-2 number, since 2×12889345² = 332270429058050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12889298 and 12889307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2326 + ... + 5584.

It is an arithmetic number, because the mean of its divisors is an integer number (1114920).

Almost surely, 2^12889345 is an apocalyptic number.

It is an amenable number.

12889345 is a deficient number, since it is larger than the sum of its proper divisors (4949375).

12889345 is a wasteful number, since it uses less digits than its factorization.

12889345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3384.

The product of its digits is 69120, while the sum is 40.

The square root of 12889345 is about 3590.1733941413. The cubic root of 12889345 is about 234.4644208716.

The spelling of 12889345 in words is "twelve million, eight hundred eighty-nine thousand, three hundred forty-five".