12003409 has 4 divisors (see below), whose sum is σ = 13094640. Its totient is φ = 10912180.

The previous prime is 12003391. The next prime is 12003427. The reversal of 12003409 is 90430021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (12003391) and next prime (12003427).

It is a cyclic number.

It is not a de Polignac number, because 12003409 - 2¹¹ = 12001361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12003449) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 545599 + ... + 545620.

It is an arithmetic number, because the mean of its divisors is an integer number (3273660).

Almost surely, 2^12003409 is an apocalyptic number.

It is an amenable number.

12003409 is a deficient number, since it is larger than the sum of its proper divisors (1091231).

12003409 is a wasteful number, since it uses less digits than its factorization.

12003409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091230.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 12003409 is about 3464.5936269641. The cubic root of 12003409 is about 228.9645260739.

The spelling of 12003409 in words is "twelve million, three thousand, four hundred nine".