299999489 has 2 divisors, whose sum is σ = 299999490. Its totient is φ = 299999488.

The previous prime is 299999471. The next prime is 299999503. The reversal of 299999489 is 984999992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175297600 + 124701889 = 13240^2 + 11167^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-299999489 is a prime.

It is a super-2 number, since 2×299999489² = 179999386800522242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (299999429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149999744 + 149999745.

It is an arithmetic number, because the mean of its divisors is an integer number (149999745).

Almost surely, 2^299999489 is an apocalyptic number.

It is an amenable number.

299999489 is a deficient number, since it is larger than the sum of its proper divisors (1).

299999489 is an equidigital number, since it uses as much as digits as its factorization.

299999489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34012224, while the sum is 68.

The square root of 299999489 is about 17320.4933243831. The cubic root of 299999489 is about 669.4325699928.

The spelling of 299999489 in words is "two hundred ninety-nine million, nine hundred ninety-nine thousand, four hundred eighty-nine".