12080905 has 8 divisors (see below), whose sum is σ = 14553792. Its totient is φ = 9626928.

The previous prime is 12080869. The next prime is 12080923. The reversal of 12080905 is 50908021.

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

It is a cyclic number.

It is not a de Polignac number, because 12080905 - 2¹³ = 12072713 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 12080905.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3279 + ... + 5908.

It is an arithmetic number, because the mean of its divisors is an integer number (1819224).

Almost surely, 2^12080905 is an apocalyptic number.

It is an amenable number.

12080905 is a deficient number, since it is larger than the sum of its proper divisors (2472887).

12080905 is an equidigital number, since it uses as much as digits as its factorization.

12080905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9455.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 12080905 is about 3475.7596292034. The cubic root of 12080905 is about 229.4562137707.

Adding to 12080905 its reverse (50908021), we get a palindrome (62988926).

The spelling of 12080905 in words is "twelve million, eighty thousand, nine hundred five".