12009115 has 8 divisors (see below), whose sum is σ = 14431248. Its totient is φ = 9593760.

The previous prime is 12009091. The next prime is 12009119. The reversal of 12009115 is 51190021.

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

It is not a de Polignac number, because 12009115 - 2¹⁷ = 11878043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12009092 and 12009101.

It is not an unprimeable number, because it can be changed into a prime (12009119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3880 + ... + 6250.

It is an arithmetic number, because the mean of its divisors is an integer number (1803906).

Almost surely, 2^12009115 is an apocalyptic number.

12009115 is a deficient number, since it is larger than the sum of its proper divisors (2422133).

12009115 is a wasteful number, since it uses less digits than its factorization.

12009115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3389.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 12009115 is about 3465.4170023245. The cubic root of 12009115 is about 229.0008008973. Note that the first 3 decimals are identical.

Adding to 12009115 its reverse (51190021), we get a palindrome (63199136).

The spelling of 12009115 in words is "twelve million, nine thousand, one hundred fifteen".