299226643 has 2 divisors, whose sum is σ = 299226644. Its totient is φ = 299226642.

The previous prime is 299226563. The next prime is 299226647. The reversal of 299226643 is 346622992.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 299226643 - 2⁹ = 299226131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 299226643.

It is not a weakly prime, because it can be changed into another prime (299226647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149613321 + 149613322.

It is an arithmetic number, because the mean of its divisors is an integer number (149613322).

Almost surely, 2^299226643 is an apocalyptic number.

299226643 is a deficient number, since it is larger than the sum of its proper divisors (1).

299226643 is an equidigital number, since it uses as much as digits as its factorization.

299226643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 43.

The square root of 299226643 is about 17298.1687759138. The cubic root of 299226643 is about 668.8572210183.

The spelling of 299226643 in words is "two hundred ninety-nine million, two hundred twenty-six thousand, six hundred forty-three".