299999999989 has 2 divisors, whose sum is σ = 299999999990. Its totient is φ = 299999999988.

The previous prime is 299999999963. The next prime is 300000000077. The reversal of 299999999989 is 989999999992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206093300625 + 93906699364 = 453975^2 + 306442^2 .

It is a cyclic number.

It is not a de Polignac number, because 299999999989 - 2²⁵ = 299966445557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 299999999894 and 299999999903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (299999999909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149999999994 + 149999999995.

It is an arithmetic number, because the mean of its divisors is an integer number (149999999995).

Almost surely, 2^299999999989 is an apocalyptic number.

It is an amenable number.

299999999989 is a deficient number, since it is larger than the sum of its proper divisors (1).

299999999989 is an equidigital number, since it uses as much as digits as its factorization.

299999999989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55788550416, while the sum is 100.

The spelling of 299999999989 in words is "two hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty-nine".