12889641 has 8 divisors (see below), whose sum is σ = 17249344. Its totient is φ = 8561520.

The previous prime is 12889627. The next prime is 12889649. The reversal of 12889641 is 14698821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12889641 - 2¹⁵ = 12856873 is a prime.

It is a super-2 number, since 2×12889641² = 332285690217762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12889641.

It is not an unprimeable number, because it can be changed into a prime (12889649) 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 7 ways as a sum of consecutive naturals, for example, 6925 + ... + 8586.

It is an arithmetic number, because the mean of its divisors is an integer number (2156168).

Almost surely, 2^12889641 is an apocalyptic number.

It is an amenable number.

12889641 is a deficient number, since it is larger than the sum of its proper divisors (4359703).

12889641 is a wasteful number, since it uses less digits than its factorization.

12889641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15791.

The product of its digits is 27648, while the sum is 39.

The square root of 12889641 is about 3590.2146175403. The cubic root of 12889641 is about 234.4662156599.

It can be divided in two parts, 12889 and 641, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 12889641 in words is "twelve million, eight hundred eighty-nine thousand, six hundred forty-one".