299051989 has 2 divisors, whose sum is σ = 299051990. Its totient is φ = 299051988.

The previous prime is 299051953. The next prime is 299052029. The reversal of 299051989 is 989150992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 260822500 + 38229489 = 16150^2 + 6183^2 .

It is a cyclic number.

It is not a de Polignac number, because 299051989 - 2⁷ = 299051861 is a prime.

It is a super-2 number, since 2×299051989² = 178864184249712242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (299051939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149525994 + 149525995.

It is an arithmetic number, because the mean of its divisors is an integer number (149525995).

Almost surely, 2^299051989 is an apocalyptic number.

It is an amenable number.

299051989 is a deficient number, since it is larger than the sum of its proper divisors (1).

299051989 is an equidigital number, since it uses as much as digits as its factorization.

299051989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 52.

The square root of 299051989 is about 17293.1197011991. The cubic root of 299051989 is about 668.7270617922.

The spelling of 299051989 in words is "two hundred ninety-nine million, fifty-one thousand, nine hundred eighty-nine".