8538401217 has 32 divisors (see below), whose sum is σ = 11741184000. Its totient is φ = 5516612928.

The previous prime is 8538401191. The next prime is 8538401219. The reversal of 8538401217 is 7121048358.

It is not a de Polignac number, because 8538401217 - 2³⁰ = 7464659393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8538401219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8217384 + ... + 8218422.

It is an arithmetic number, because the mean of its divisors is an integer number (366912000).

Almost surely, 2^8538401217 is an apocalyptic number.

It is an amenable number.

8538401217 is a deficient number, since it is larger than the sum of its proper divisors (3202782783).

8538401217 is a wasteful number, since it uses less digits than its factorization.

8538401217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 8538401217 is about 92403.4697238150. The cubic root of 8538401217 is about 2043.8962778935.

The spelling of 8538401217 in words is "eight billion, five hundred thirty-eight million, four hundred one thousand, two hundred seventeen".