12239347 has 2 divisors, whose sum is σ = 12239348. Its totient is φ = 12239346.

The previous prime is 12239329. The next prime is 12239351. The reversal of 12239347 is 74393221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12239347 is a prime.

It is a super-2 number, since 2×12239347² = 299603229972818, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12239147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6119673 + 6119674.

It is an arithmetic number, because the mean of its divisors is an integer number (6119674).

Almost surely, 2^12239347 is an apocalyptic number.

12239347 is a deficient number, since it is larger than the sum of its proper divisors (1).

12239347 is an equidigital number, since it uses as much as digits as its factorization.

12239347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 12239347 is about 3498.4778118490. The cubic root of 12239347 is about 230.4549721240.

The spelling of 12239347 in words is "twelve million, two hundred thirty-nine thousand, three hundred forty-seven".