300020009 has 4 divisors (see below), whose sum is σ = 301816704. Its totient is φ = 298223316.

The previous prime is 300020003. The next prime is 300020023. The reversal of 300020009 is 900020003.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-300020009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 300019975 and 300020002.

It is not an unprimeable number, because it can be changed into a prime (300020003) 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, 898097 + ... + 898430.

It is an arithmetic number, because the mean of its divisors is an integer number (75454176).

Almost surely, 2^300020009 is an apocalyptic number.

It is an amenable number.

300020009 is a deficient number, since it is larger than the sum of its proper divisors (1796695).

300020009 is a wasteful number, since it uses less digits than its factorization.

300020009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796694.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 300020009 is about 17321.0856761347. The cubic root of 300020009 is about 669.4478327334.

The spelling of 300020009 in words is "three hundred million, twenty thousand, nine".