299720085 has 32 divisors (see below), whose sum is σ = 548750592. Its totient is φ = 136842240.

The previous prime is 299720063. The next prime is 299720089. The reversal of 299720085 is 580027992.

It is not a de Polignac number, because 299720085 - 2⁶ = 299720021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (299720089) 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 in 31 ways as a sum of consecutive naturals, for example, 122797 + ... + 125213.

It is an arithmetic number, because the mean of its divisors is an integer number (17148456).

Almost surely, 2^299720085 is an apocalyptic number.

It is an amenable number.

299720085 is a deficient number, since it is larger than the sum of its proper divisors (249030507).

299720085 is a wasteful number, since it uses less digits than its factorization.

299720085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3613.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 299720085 is about 17312.4257399129. The cubic root of 299720085 is about 669.2246804887.

The spelling of 299720085 in words is "two hundred ninety-nine million, seven hundred twenty thousand, eighty-five".