12009416 has 8 divisors (see below), whose sum is σ = 22517670. Its totient is φ = 6004704.

The previous prime is 12009409. The next prime is 12009419. The reversal of 12009416 is 61490021.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10176100 + 1833316 = 3190^2 + 1354^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×12009416² = 288452145322112, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12009391 and 12009400.

It is not an unprimeable number, because it can be changed into a prime (12009419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 750581 + ... + 750596.

Almost surely, 2^12009416 is an apocalyptic number.

It is an amenable number.

12009416 is a deficient number, since it is larger than the sum of its proper divisors (10508254).

12009416 is a wasteful number, since it uses less digits than its factorization.

12009416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501183 (or 1501179 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 12009416 is about 3465.4604311693. The cubic root of 12009416 is about 229.0027141291.

Adding to 12009416 its reverse (61490021), we get a palindrome (73499437).

The spelling of 12009416 in words is "twelve million, nine thousand, four hundred sixteen".