12409047 has 24 divisors (see below), whose sum is σ = 20827040. Its totient is φ = 6972480.

The previous prime is 12409037. The next prime is 12409091. The reversal of 12409047 is 74090421.

It is a happy number.

It is not a de Polignac number, because 12409047 - 2¹⁰ = 12408023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12409047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12409037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2229 + ... + 5457.

Almost surely, 2^12409047 is an apocalyptic number.

12409047 is a deficient number, since it is larger than the sum of its proper divisors (8417993).

12409047 is a wasteful number, since it uses less digits than its factorization.

12409047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3303 (or 3300 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 12409047 is about 3522.6477257881. The cubic root of 12409047 is about 231.5151823253.

Adding to 12409047 its reverse (74090421), we get a palindrome (86499468).

The spelling of 12409047 in words is "twelve million, four hundred nine thousand, forty-seven".