12409161 has 8 divisors (see below), whose sum is σ = 16561920. Its totient is φ = 8264592.

The previous prime is 12409153. The next prime is 12409193. The reversal of 12409161 is 16190421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12409161 - 2³ = 12409153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12409141) 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 7 ways as a sum of consecutive naturals, for example, 4335 + ... + 6603.

It is an arithmetic number, because the mean of its divisors is an integer number (2070240).

Almost surely, 2^12409161 is an apocalyptic number.

It is an amenable number.

12409161 is a deficient number, since it is larger than the sum of its proper divisors (4152759).

12409161 is a wasteful number, since it uses less digits than its factorization.

12409161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4095.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 12409161 is about 3522.6639067615. The cubic root of 12409161 is about 231.5158912878.

Adding to 12409161 its reverse (16190421), we get a palindrome (28599582).

It can be divided in two parts, 1240 and 9161, that added together give a palindrome (10401).

The spelling of 12409161 in words is "twelve million, four hundred nine thousand, one hundred sixty-one".