12999089 has 2 divisors, whose sum is σ = 12999090. Its totient is φ = 12999088.

The previous prime is 12999083. The next prime is 12999127. The reversal of 12999089 is 98099921.

12999089 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., 6848689 + 6150400 = 2617^2 + 2480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12999089 is a prime.

It is not a weakly prime, because it can be changed into another prime (12999083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6499544 + 6499545.

It is an arithmetic number, because the mean of its divisors is an integer number (6499545).

Almost surely, 2^12999089 is an apocalyptic number.

It is an amenable number.

12999089 is a deficient number, since it is larger than the sum of its proper divisors (1).

12999089 is an equidigital number, since it uses as much as digits as its factorization.

12999089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 47.

The square root of 12999089 is about 3605.4249402810. The cubic root of 12999089 is about 235.1279761671.

The spelling of 12999089 in words is "twelve million, nine hundred ninety-nine thousand, eighty-nine".