12889613 has 4 divisors (see below), whose sum is σ = 14061408. Its totient is φ = 11717820.

The previous prime is 12889607. The next prime is 12889627. The reversal of 12889613 is 31698821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12889613 - 2⁶ = 12889549 is a prime.

It is a super-2 number, since 2×12889613² = 332284246579538, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12889663) 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 3 ways as a sum of consecutive naturals, for example, 585881 + ... + 585902.

It is an arithmetic number, because the mean of its divisors is an integer number (3515352).

Almost surely, 2^12889613 is an apocalyptic number.

It is an amenable number.

12889613 is a deficient number, since it is larger than the sum of its proper divisors (1171795).

12889613 is a wasteful number, since it uses less digits than its factorization.

12889613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171794.

The product of its digits is 20736, while the sum is 38.

The square root of 12889613 is about 3590.2107180498. The cubic root of 12889613 is about 234.4660458838.

It can be divided in two parts, 1288 and 9613, that added together give a palindrome (10901).

The spelling of 12889613 in words is "twelve million, eight hundred eighty-nine thousand, six hundred thirteen".