299891 has 2 divisors, whose sum is σ = 299892. Its totient is φ = 299890.

The previous prime is 299881. The next prime is 299903. The reversal of 299891 is 198992.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 299891 - 2¹⁸ = 37747 is a prime.

It is a super-2 number, since 2×299891² = 179869223762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a plaindrome in base 12.

It is not a weakly prime, because it can be changed into another prime (299861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149945 + 149946.

It is an arithmetic number, because the mean of its divisors is an integer number (149946).

2²⁹⁹⁸⁹¹ is an apocalyptic number.

299891 is a deficient number, since it is larger than the sum of its proper divisors (1).

299891 is an equidigital number, since it uses as much as digits as its factorization.

299891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 38.

The square root of 299891 is about 547.6230455341. The cubic root of 299891 is about 66.9351864493.

The spelling of 299891 in words is "two hundred ninety-nine thousand, eight hundred ninety-one".