299074021 has 2 divisors, whose sum is σ = 299074022. Its totient is φ = 299074020.

The previous prime is 299074007. The next prime is 299074043. The reversal of 299074021 is 120470992.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262893796 + 36180225 = 16214^2 + 6015^2 .

It is a cyclic number.

It is not a de Polignac number, because 299074021 - 2⁷ = 299073893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (299074001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149537010 + 149537011.

It is an arithmetic number, because the mean of its divisors is an integer number (149537011).

Almost surely, 2^299074021 is an apocalyptic number.

It is an amenable number.

299074021 is a deficient number, since it is larger than the sum of its proper divisors (1).

299074021 is an equidigital number, since it uses as much as digits as its factorization.

299074021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 299074021 is about 17293.7567058173. The cubic root of 299074021 is about 668.7434837226.

The spelling of 299074021 in words is "two hundred ninety-nine million, seventy-four thousand, twenty-one".