8355438117 has 48 divisors (see below), whose sum is σ = 13668939648. Its totient is φ = 5069252160.

The previous prime is 8355438109. The next prime is 8355438139. The reversal of 8355438117 is 7118345538.

It is a happy number.

8355438117 is a `hidden beast` number, since 8 + 3 + 554 + 3 + 81 + 17 = 666.

It is not a de Polignac number, because 8355438117 - 2³ = 8355438109 is a prime.

It is a super-2 number, since 2×8355438117² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8355438187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 205663 + ... + 242915.

It is an arithmetic number, because the mean of its divisors is an integer number (284769576).

Almost surely, 2^8355438117 is an apocalyptic number.

It is an amenable number.

8355438117 is a deficient number, since it is larger than the sum of its proper divisors (5313501531).

8355438117 is a wasteful number, since it uses less digits than its factorization.

8355438117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37352 (or 37340 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 8355438117 is about 91408.0856215685. The cubic root of 8355438117 is about 2029.1916926368.

The spelling of 8355438117 in words is "eight billion, three hundred fifty-five million, four hundred thirty-eight thousand, one hundred seventeen".