12238291 has 4 divisors (see below), whose sum is σ = 13179712. Its totient is φ = 11296872.

The previous prime is 12238279. The next prime is 12238297. The reversal of 12238291 is 19283221.

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 12238291 - 2⁹ = 12237779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12238297) 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, 470691 + ... + 470716.

It is an arithmetic number, because the mean of its divisors is an integer number (3294928).

Almost surely, 2^12238291 is an apocalyptic number.

12238291 is a deficient number, since it is larger than the sum of its proper divisors (941421).

12238291 is an equidigital number, since it uses as much as digits as its factorization.

12238291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941420.

The product of its digits is 1728, while the sum is 28.

The square root of 12238291 is about 3498.3268858127. The cubic root of 12238291 is about 230.4483441165.

It can be divided in two parts, 1223829 and 1, that added together give a triangular number (1223830 = T₁₅₆₄).

The spelling of 12238291 in words is "twelve million, two hundred thirty-eight thousand, two hundred ninety-one".