12347789 has 2 divisors, whose sum is σ = 12347790. Its totient is φ = 12347788.

The previous prime is 12347773. The next prime is 12347801. The reversal of 12347789 is 98774321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8008900 + 4338889 = 2830^2 + 2083^2 .

It is a cyclic number.

It is not a de Polignac number, because 12347789 - 2⁴ = 12347773 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12347749) 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 as a sum of consecutive naturals, namely, 6173894 + 6173895.

It is an arithmetic number, because the mean of its divisors is an integer number (6173895).

Almost surely, 2^12347789 is an apocalyptic number.

It is an amenable number.

12347789 is a deficient number, since it is larger than the sum of its proper divisors (1).

12347789 is an equidigital number, since it uses as much as digits as its factorization.

12347789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The square root of 12347789 is about 3513.9420883105. The cubic root of 12347789 is about 231.1335908871.

The spelling of 12347789 in words is "twelve million, three hundred forty-seven thousand, seven hundred eighty-nine".