300138609 has 4 divisors (see below), whose sum is σ = 400184816. Its totient is φ = 200092404.

The previous prime is 300138607. The next prime is 300138613. The reversal of 300138609 is 906831003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 300138609 - 2¹ = 300138607 is a prime.

It is a super-2 number, since 2×300138609² = 180166369224909762, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (300138607) 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, 50023099 + ... + 50023104.

It is an arithmetic number, because the mean of its divisors is an integer number (100046204).

Almost surely, 2^300138609 is an apocalyptic number.

It is an amenable number.

300138609 is a deficient number, since it is larger than the sum of its proper divisors (100046207).

300138609 is a wasteful number, since it uses less digits than its factorization.

300138609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100046206.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 300138609 is about 17324.5089107888. The cubic root of 300138609 is about 669.5360335766.

The spelling of 300138609 in words is "three hundred million, one hundred thirty-eight thousand, six hundred nine".