12099405 has 16 divisors (see below), whose sum is σ = 19445184. Its totient is φ = 6424320.

The previous prime is 12099401. The next prime is 12099413. The reversal of 12099405 is 50499021.

It is a happy number.

12099405 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12099405 - 2² = 12099401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12099401) 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, 1942 + ... + 5288.

It is an arithmetic number, because the mean of its divisors is an integer number (1215324).

Almost surely, 2^12099405 is an apocalyptic number.

12099405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12099405 is a deficient number, since it is larger than the sum of its proper divisors (7345779).

12099405 is a wasteful number, since it uses less digits than its factorization.

12099405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3596.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 12099405 is about 3478.4198998971. The cubic root of 12099405 is about 229.5732793652.

The spelling of 12099405 in words is "twelve million, ninety-nine thousand, four hundred five".