6400009117 has 16 divisors (see below), whose sum is σ = 6766322688. Its totient is φ = 6044912640.

The previous prime is 6400009111. The next prime is 6400009157. The reversal of 6400009117 is 7119000046.

It is a cyclic number.

It is not a de Polignac number, because 6400009117 - 2¹¹ = 6400007069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400009111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307008 + ... + 327190.

It is an arithmetic number, because the mean of its divisors is an integer number (422895168).

Almost surely, 2^6400009117 is an apocalyptic number.

It is an amenable number.

6400009117 is a deficient number, since it is larger than the sum of its proper divisors (366313571).

6400009117 is a wasteful number, since it uses less digits than its factorization.

6400009117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20460.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 6400009117 is about 80000.0569812297. The cubic root of 6400009117 is about 1856.6364150565.

The spelling of 6400009117 in words is "six billion, four hundred million, nine thousand, one hundred seventeen".