12023309989 has 2 divisors, whose sum is σ = 12023309990. Its totient is φ = 12023309988.

The previous prime is 12023309971. The next prime is 12023310001. The reversal of 12023309989 is 98990332021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12023122500 + 187489 = 109650^2 + 433^2 .

It is a cyclic number.

It is not a de Polignac number, because 12023309989 - 2¹¹ = 12023307941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12023309189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6011654994 + 6011654995.

It is an arithmetic number, because the mean of its divisors is an integer number (6011654995).

Almost surely, 2^12023309989 is an apocalyptic number.

It is an amenable number.

12023309989 is a deficient number, since it is larger than the sum of its proper divisors (1).

12023309989 is an equidigital number, since it uses as much as digits as its factorization.

12023309989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 46.

The spelling of 12023309989 in words is "twelve billion, twenty-three million, three hundred nine thousand, nine hundred eighty-nine".