12148789 has 2 divisors, whose sum is σ = 12148790. Its totient is φ = 12148788.

The previous prime is 12148783. The next prime is 12148811. The reversal of 12148789 is 98784121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7452900 + 4695889 = 2730^2 + 2167^2 .

It is a cyclic number.

It is not a de Polignac number, because 12148789 - 2³ = 12148781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12148781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6074394 + 6074395.

It is an arithmetic number, because the mean of its divisors is an integer number (6074395).

Almost surely, 2^12148789 is an apocalyptic number.

It is an amenable number.

12148789 is a deficient number, since it is larger than the sum of its proper divisors (1).

12148789 is an equidigital number, since it uses as much as digits as its factorization.

12148789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 40.

The square root of 12148789 is about 3485.5112967827. The cubic root of 12148789 is about 229.8851915983.

The spelling of 12148789 in words is "twelve million, one hundred forty-eight thousand, seven hundred eighty-nine".