299734021 has 4 divisors (see below), whose sum is σ = 317365452. Its totient is φ = 282102592.

The previous prime is 299734007. The next prime is 299734031. The reversal of 299734021 is 120437992.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 250873921 + 48860100 = 15839^2 + 6990^2 .

It is a cyclic number.

It is not a de Polignac number, because 299734021 - 2⁷ = 299733893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (299734031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8815690 + ... + 8815723.

It is an arithmetic number, because the mean of its divisors is an integer number (79341363).

Almost surely, 2^299734021 is an apocalyptic number.

It is an amenable number.

299734021 is a deficient number, since it is larger than the sum of its proper divisors (17631431).

299734021 is a wasteful number, since it uses less digits than its factorization.

299734021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17631430.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 299734021 is about 17312.8282207154. The cubic root of 299734021 is about 669.2350525782.

The spelling of 299734021 in words is "two hundred ninety-nine million, seven hundred thirty-four thousand, twenty-one".