6539890417 has 12 divisors (see below), whose sum is σ = 6843279360. Its totient is φ = 6248740680.

The previous prime is 6539890391. The next prime is 6539890433. The reversal of 6539890417 is 7140989356.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-6539890417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6539890457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32848 + ... + 118990.

It is an arithmetic number, because the mean of its divisors is an integer number (570273280).

Almost surely, 2^6539890417 is an apocalyptic number.

It is an amenable number.

6539890417 is a deficient number, since it is larger than the sum of its proper divisors (303388943).

6539890417 is an equidigital number, since it uses as much as digits as its factorization.

6539890417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86284 (or 86253 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 6539890417 is about 80869.5889503588. The cubic root of 6539890417 is about 1870.0655240274.

The spelling of 6539890417 in words is "six billion, five hundred thirty-nine million, eight hundred ninety thousand, four hundred seventeen".