12689199 has 12 divisors (see below), whose sum is σ = 18920512. Its totient is φ = 8186400.

The previous prime is 12689167. The next prime is 12689219. The reversal of 12689199 is 99198621.

It is not a de Polignac number, because 12689199 - 2⁵ = 12689167 is a prime.

It is a super-2 number, since 2×12689199² = 322031542523202, 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 (12689129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22462 + ... + 23019.

Almost surely, 2^12689199 is an apocalyptic number.

12689199 is a deficient number, since it is larger than the sum of its proper divisors (6231313).

12689199 is a wasteful number, since it uses less digits than its factorization.

12689199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45518 (or 45515 counting only the distinct ones).

The product of its digits is 69984, while the sum is 45.

The square root of 12689199 is about 3562.1901970557. The cubic root of 12689199 is about 233.2444952055.

The spelling of 12689199 in words is "twelve million, six hundred eighty-nine thousand, one hundred ninety-nine".