12889117 has 4 divisors (see below), whose sum is σ = 13100476. Its totient is φ = 12677760.

The previous prime is 12889109. The next prime is 12889133. The reversal of 12889117 is 71198821.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4280761 + 8608356 = 2069^2 + 2934^2 .

It is a cyclic number.

It is not a de Polignac number, because 12889117 - 2³ = 12889109 is a prime.

It is a super-2 number, since 2×12889117² = 332258674079378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12889147) 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, 105588 + ... + 105709.

It is an arithmetic number, because the mean of its divisors is an integer number (3275119).

Almost surely, 2^12889117 is an apocalyptic number.

It is an amenable number.

12889117 is a deficient number, since it is larger than the sum of its proper divisors (211359).

12889117 is an equidigital number, since it uses as much as digits as its factorization.

12889117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211358.

The product of its digits is 8064, while the sum is 37.

The square root of 12889117 is about 3590.1416406599. The cubic root of 12889117 is about 234.4630383808.

The spelling of 12889117 in words is "twelve million, eight hundred eighty-nine thousand, one hundred seventeen".