299354021 has 2 divisors, whose sum is σ = 299354022. Its totient is φ = 299354020.

The previous prime is 299353981. The next prime is 299354047. The reversal of 299354021 is 120453992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 256960900 + 42393121 = 16030^2 + 6511^2 .

It is a cyclic number.

It is not a de Polignac number, because 299354021 - 2²² = 295159717 is a prime.

It is a super-2 number, since 2×299354021² = 179225659777736882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (299354521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149677010 + 149677011.

It is an arithmetic number, because the mean of its divisors is an integer number (149677011).

Almost surely, 2^299354021 is an apocalyptic number.

It is an amenable number.

299354021 is a deficient number, since it is larger than the sum of its proper divisors (1).

299354021 is an equidigital number, since it uses as much as digits as its factorization.

299354021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 299354021 is about 17301.8502189795. The cubic root of 299354021 is about 668.9521163211.

The spelling of 299354021 in words is "two hundred ninety-nine million, three hundred fifty-four thousand, twenty-one".