13166909 has 16 divisors (see below), whose sum is σ = 15876096. Its totient is φ = 10681200.

The previous prime is 13166903. The next prime is 13166917. The reversal of 13166909 is 90966131.

13166909 = T₁₀₂ + T₁₀₃ + ... + T₄₃₀.

It is a cyclic number.

It is not a de Polignac number, because 13166909 - 2⁴ = 13166893 is a prime.

It is a super-2 number, since 2×13166909² = 346734985228562, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13166903) 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 in 15 ways as a sum of consecutive naturals, for example, 9554 + ... + 10844.

It is an arithmetic number, because the mean of its divisors is an integer number (992256).

Almost surely, 2^13166909 is an apocalyptic number.

It is an amenable number.

13166909 is a deficient number, since it is larger than the sum of its proper divisors (2709187).

13166909 is a wasteful number, since it uses less digits than its factorization.

13166909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 13166909 is about 3628.6235682418. The cubic root of 13166909 is about 236.1354974561.

The spelling of 13166909 in words is "thirteen million, one hundred sixty-six thousand, nine hundred nine".