299805005 has 4 divisors (see below), whose sum is σ = 359766012. Its totient is φ = 239844000.

The previous prime is 299804993. The next prime is 299805007. The reversal of 299805005 is 500508992.

It is a happy number.

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 144528484 + 155276521 = 12022^2 + 12461^2 .

It is not a de Polignac number, because 299805005 - 2⁸ = 299804749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 299805005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (299805007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29980496 + ... + 29980505.

It is an arithmetic number, because the mean of its divisors is an integer number (89941503).

Almost surely, 2^299805005 is an apocalyptic number.

It is an amenable number.

299805005 is a deficient number, since it is larger than the sum of its proper divisors (59961007).

299805005 is an equidigital number, since it uses as much as digits as its factorization.

299805005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59961006.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 299805005 is about 17314.8781399119. The cubic root of 299805005 is about 669.2878785595.

The spelling of 299805005 in words is "two hundred ninety-nine million, eight hundred five thousand, five".