12099605 has 16 divisors (see below), whose sum is σ = 16650624. Its totient is φ = 8268480.

The previous prime is 12099601. The next prime is 12099611. The reversal of 12099605 is 50699021.

It is not a de Polignac number, because 12099605 - 2² = 12099601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12099601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17975 + ... + 18635.

It is an arithmetic number, because the mean of its divisors is an integer number (1040664).

Almost surely, 2^12099605 is an apocalyptic number.

It is an amenable number.

12099605 is a deficient number, since it is larger than the sum of its proper divisors (4551019).

12099605 is an equidigital number, since it uses as much as digits as its factorization.

12099605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 12099605 is about 3478.4486484639. The cubic root of 12099605 is about 229.5745442870.

The spelling of 12099605 in words is "twelve million, ninety-nine thousand, six hundred five".