12489647029 has 2 divisors, whose sum is σ = 12489647030. Its totient is φ = 12489647028.

The previous prime is 12489647003. The next prime is 12489647041. The reversal of 12489647029 is 92074698421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7179172900 + 5310474129 = 84730^2 + 72873^2 .

It is a cyclic number.

It is not a de Polignac number, because 12489647029 - 2¹⁹ = 12489122741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12489647089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6244823514 + 6244823515.

It is an arithmetic number, because the mean of its divisors is an integer number (6244823515).

Almost surely, 2^12489647029 is an apocalyptic number.

It is an amenable number.

12489647029 is a deficient number, since it is larger than the sum of its proper divisors (1).

12489647029 is an equidigital number, since it uses as much as digits as its factorization.

12489647029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 12489647029 in words is "twelve billion, four hundred eighty-nine million, six hundred forty-seven thousand, twenty-nine".