12109799 has 16 divisors (see below), whose sum is σ = 13777344. Its totient is φ = 10560000.

The previous prime is 12109697. The next prime is 12109817. The reversal of 12109799 is 99790121.

12109799 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12109799 - 2⁸ = 12109543 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 (12102799) 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, 29999 + ... + 30399.

It is an arithmetic number, because the mean of its divisors is an integer number (861084).

Almost surely, 2^12109799 is an apocalyptic number.

12109799 is a deficient number, since it is larger than the sum of its proper divisors (1667545).

12109799 is a wasteful number, since it uses less digits than its factorization.

12109799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538.

The product of its (nonzero) digits is 10206, while the sum is 38.

The square root of 12109799 is about 3479.9136483539. The cubic root of 12109799 is about 229.6389988973.

The spelling of 12109799 in words is "twelve million, one hundred nine thousand, seven hundred ninety-nine".