12005399 has 8 divisors (see below), whose sum is σ = 13862688. Its totient is φ = 10183680.

The previous prime is 12005363. The next prime is 12005407. The reversal of 12005399 is 99350021.

12005399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12005399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12005309) 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, 8162 + ... + 9519.

It is an arithmetic number, because the mean of its divisors is an integer number (1732836).

Almost surely, 2^12005399 is an apocalyptic number.

12005399 is a deficient number, since it is larger than the sum of its proper divisors (1857289).

12005399 is an equidigital number, since it uses as much as digits as its factorization.

12005399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17785.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 12005399 is about 3464.8808060307. The cubic root of 12005399 is about 228.9771784304.

The spelling of 12005399 in words is "twelve million, five thousand, three hundred ninety-nine".