299764921 has 2 divisors, whose sum is σ = 299764922. Its totient is φ = 299764920.

The previous prime is 299764903. The next prime is 299764939. The reversal of 299764921 is 129467992.

It is a balanced prime because it is at equal distance from previous prime (299764903) and next prime (299764939).

It can be written as a sum of positive squares in only one way, i.e., 215032896 + 84732025 = 14664^2 + 9205^2 .

It is a cyclic number.

It is not a de Polignac number, because 299764921 - 2⁵ = 299764889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (299764951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149882460 + 149882461.

It is an arithmetic number, because the mean of its divisors is an integer number (149882461).

Almost surely, 2^299764921 is an apocalyptic number.

It is an amenable number.

299764921 is a deficient number, since it is larger than the sum of its proper divisors (1).

299764921 is an equidigital number, since it uses as much as digits as its factorization.

299764921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 49.

The square root of 299764921 is about 17313.7205995707. The cubic root of 299764921 is about 669.2580492476.

The spelling of 299764921 in words is "two hundred ninety-nine million, seven hundred sixty-four thousand, nine hundred twenty-one".