12369491 has 4 divisors (see below), whose sum is σ = 12391800. Its totient is φ = 12347184.

The previous prime is 12369479. The next prime is 12369499. The reversal of 12369491 is 19496321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12369491 - 2¹⁰ = 12368467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12369499) 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, 10301 + ... + 11438.

It is an arithmetic number, because the mean of its divisors is an integer number (3097950).

Almost surely, 2^12369491 is an apocalyptic number.

12369491 is a deficient number, since it is larger than the sum of its proper divisors (22309).

12369491 is an equidigital number, since it uses as much as digits as its factorization.

12369491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22308.

The product of its digits is 11664, while the sum is 35.

The square root of 12369491 is about 3517.0287175398. The cubic root of 12369491 is about 231.2689221429.

The spelling of 12369491 in words is "twelve million, three hundred sixty-nine thousand, four hundred ninety-one".