299945897 has 2 divisors, whose sum is σ = 299945898. Its totient is φ = 299945896.

The previous prime is 299945879. The next prime is 299945959. The reversal of 299945897 is 798549992.

Together with previous prime (299945879) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (299945959) can be obtained adding 299945897 to its sum of digits (62).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 296666176 + 3279721 = 17224^2 + 1811^2 .

It is a cyclic number.

It is not a de Polignac number, because 299945897 - 2⁸ = 299945641 is a prime.

It is a super-2 number, since 2×299945897² = 179935082254269218, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (299905897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149972948 + 149972949.

It is an arithmetic number, because the mean of its divisors is an integer number (149972949).

Almost surely, 2^299945897 is an apocalyptic number.

It is an amenable number.

299945897 is a deficient number, since it is larger than the sum of its proper divisors (1).

299945897 is an equidigital number, since it uses as much as digits as its factorization.

299945897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14696640, while the sum is 62.

The square root of 299945897 is about 17318.9461861858. The cubic root of 299945897 is about 669.3927050729.

The spelling of 299945897 in words is "two hundred ninety-nine million, nine hundred forty-five thousand, eight hundred ninety-seven".