12699172 has 6 divisors (see below), whose sum is σ = 22223558. Its totient is φ = 6349584.

The previous prime is 12699157. The next prime is 12699209. The reversal of 12699172 is 27199621.

It can be written as a sum of positive squares in only one way, i.e., 6677056 + 6022116 = 2584^2 + 2454^2 .

It is a super-2 number, since 2×12699172² = 322537938971168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1587393 + ... + 1587400.

Almost surely, 2^12699172 is an apocalyptic number.

It is an amenable number.

12699172 is a deficient number, since it is larger than the sum of its proper divisors (9524386).

12699172 is a wasteful number, since it uses less digits than its factorization.

12699172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3174797 (or 3174795 counting only the distinct ones).

The product of its digits is 13608, while the sum is 37.

The square root of 12699172 is about 3563.5897631461. The cubic root of 12699172 is about 233.3055849089.

The spelling of 12699172 in words is "twelve million, six hundred ninety-nine thousand, one hundred seventy-two".