12133409 has 4 divisors (see below), whose sum is σ = 12339120. Its totient is φ = 11927700.

The previous prime is 12133399. The next prime is 12133411. The reversal of 12133409 is 90433121.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12133409 is a prime.

It is a super-2 number, since 2×12133409² = 294439227922562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12133309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102767 + ... + 102884.

It is an arithmetic number, because the mean of its divisors is an integer number (3084780).

Almost surely, 2^12133409 is an apocalyptic number.

It is an amenable number.

12133409 is a deficient number, since it is larger than the sum of its proper divisors (205711).

12133409 is an equidigital number, since it uses as much as digits as its factorization.

12133409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205710.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 12133409 is about 3483.3043220482. The cubic root of 12133409 is about 229.7881413957.

The spelling of 12133409 in words is "twelve million, one hundred thirty-three thousand, four hundred nine".