4047318909 has 12 divisors (see below), whose sum is σ = 6047718300. Its totient is φ = 2605170624.

The previous prime is 4047318907. The next prime is 4047318917. The reversal of 4047318909 is 9098137404.

It can be written as a sum of positive squares in 2 ways, for example, as 1179716409 + 2867602500 = 34347^2 + 53550^2 .

It is not a de Polignac number, because 4047318909 - 2¹ = 4047318907 is a prime.

It is a super-2 number, since 2×4047318909² = 32761580702297900562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4047318907) 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, 7753224 + ... + 7753745.

It is an arithmetic number, because the mean of its divisors is an integer number (503976525).

Almost surely, 2^4047318909 is an apocalyptic number.

It is an amenable number.

4047318909 is a deficient number, since it is larger than the sum of its proper divisors (2000399391).

4047318909 is a wasteful number, since it uses less digits than its factorization.

4047318909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15507004 (or 15507001 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 4047318909 is about 63618.5421791477. The cubic root of 4047318909 is about 1593.6360373229.

The spelling of 4047318909 in words is "four billion, forty-seven million, three hundred eighteen thousand, nine hundred nine".