299878849 has 2 divisors, whose sum is σ = 299878850. Its totient is φ = 299878848.

The previous prime is 299878837. The next prime is 299878907. The reversal of 299878849 is 948878992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240095025 + 59783824 = 15495^2 + 7732^2 .

It is a cyclic number.

It is not a de Polignac number, because 299878849 - 2²¹ = 297781697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (299878819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149939424 + 149939425.

It is an arithmetic number, because the mean of its divisors is an integer number (149939425).

Almost surely, 2^299878849 is an apocalyptic number.

It is an amenable number.

299878849 is a deficient number, since it is larger than the sum of its proper divisors (1).

299878849 is an equidigital number, since it uses as much as digits as its factorization.

299878849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20901888, while the sum is 64.

The square root of 299878849 is about 17317.0103944070. The cubic root of 299878849 is about 669.3428240920.

The spelling of 299878849 in words is "two hundred ninety-nine million, eight hundred seventy-eight thousand, eight hundred forty-nine".