12011789 has 2 divisors, whose sum is σ = 12011790. Its totient is φ = 12011788.

The previous prime is 12011777. The next prime is 12011807. The reversal of 12011789 is 98711021.

12011789 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7672900 + 4338889 = 2770^2 + 2083^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12011789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005894 + 6005895.

It is an arithmetic number, because the mean of its divisors is an integer number (6005895).

Almost surely, 2^12011789 is an apocalyptic number.

It is an amenable number.

12011789 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011789 is an equidigital number, since it uses as much as digits as its factorization.

12011789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 12011789 is about 3465.8027930048. The cubic root of 12011789 is about 229.0177963960.

The spelling of 12011789 in words is "twelve million, eleven thousand, seven hundred eighty-nine".