12891514 has 4 divisors (see below), whose sum is σ = 19337274. Its totient is φ = 6445756.

The previous prime is 12891509. The next prime is 12891517. The reversal of 12891514 is 41519821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12780625 + 110889 = 3575^2 + 333^2 .

It is a super-2 number, since 2×12891514² = 332382266424392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12891517) 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 as a sum of consecutive naturals, namely, 3222877 + ... + 3222880.

Almost surely, 2^12891514 is an apocalyptic number.

12891514 is a deficient number, since it is larger than the sum of its proper divisors (6445760).

12891514 is an equidigital number, since it uses as much as digits as its factorization.

12891514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6445759.

The product of its digits is 2880, while the sum is 31.

The square root of 12891514 is about 3590.4754559807. The cubic root of 12891514 is about 234.4775719098.

The spelling of 12891514 in words is "twelve million, eight hundred ninety-one thousand, five hundred fourteen".