12133949 has 4 divisors (see below), whose sum is σ = 12661536. Its totient is φ = 11606364.

The previous prime is 12133939. The next prime is 12133963. The reversal of 12133949 is 94933121.

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-12133949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12133939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263759 + ... + 263804.

It is an arithmetic number, because the mean of its divisors is an integer number (3165384).

Almost surely, 2^12133949 is an apocalyptic number.

It is an amenable number.

12133949 is a deficient number, since it is larger than the sum of its proper divisors (527587).

12133949 is an equidigital number, since it uses as much as digits as its factorization.

12133949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527586.

The product of its digits is 5832, while the sum is 32.

The square root of 12133949 is about 3483.3818337931. The cubic root of 12133949 is about 229.7915502689.

The spelling of 12133949 in words is "twelve million, one hundred thirty-three thousand, nine hundred forty-nine".