300645009 has 12 divisors (see below), whose sum is σ = 496302976. Its totient is φ = 171797112.

The previous prime is 300644987. The next prime is 300645047. The reversal of 300645009 is 900546003.

It is a happy number.

It is not a de Polignac number, because 300645009 - 2⁹ = 300644497 is a prime.

It is a super-2 number, since 2×300645009² = 180774842873220162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (300625009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2386009 + ... + 2386134.

Almost surely, 2^300645009 is an apocalyptic number.

It is an amenable number.

300645009 is a deficient number, since it is larger than the sum of its proper divisors (195657967).

300645009 is a wasteful number, since it uses less digits than its factorization.

300645009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4772156 (or 4772153 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 300645009 is about 17339.1178841370. The cubic root of 300645009 is about 669.9123736297.

The spelling of 300645009 in words is "three hundred million, six hundred forty-five thousand, nine".