8455538117 has 8 divisors (see below), whose sum is σ = 9328061400. Its totient is φ = 7614743040.

The previous prime is 8455538111. The next prime is 8455538131. The reversal of 8455538117 is 7118355548.

It is a Cunningham number, because it is equal to 91954²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 407474596 + 8048063521 = 20186^2 + 89711^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8455538117 - 2⁴ = 8455538101 is a prime.

It is a super-2 number, since 2×8455538117² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8455538111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7931492 + ... + 7932557.

It is an arithmetic number, because the mean of its divisors is an integer number (1166007675).

Almost surely, 2^8455538117 is an apocalyptic number.

It is an amenable number.

8455538117 is a deficient number, since it is larger than the sum of its proper divisors (872523283).

8455538117 is a wasteful number, since it uses less digits than its factorization.

8455538117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15864103.

The product of its digits is 672000, while the sum is 47.

The square root of 8455538117 is about 91954.0000054375. Note that the first 5 decimals coincide. The cubic root of 8455538117 is about 2037.2629348783.

The spelling of 8455538117 in words is "eight billion, four hundred fifty-five million, five hundred thirty-eight thousand, one hundred seventeen".