9999888584487 has 4 divisors (see below), whose sum is σ = 13333184779320. Its totient is φ = 6666592389656.

The previous prime is 9999888584473. The next prime is 9999888584507. The reversal of 9999888584487 is 7844858889999.

9999888584487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9999888584487 - 2⁷ = 9999888584359 is a prime.

It is a super-3 number, since 3×9999888584487³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9999888584394 and 9999888584403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999888584407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1666648097412 + ... + 1666648097417.

It is an arithmetic number, because the mean of its divisors is an integer number (3333296194830).

Almost surely, 2^{9999888584487} is an apocalyptic number.

9999888584487 is a deficient number, since it is larger than the sum of its proper divisors (3333296194833).

9999888584487 is a wasteful number, since it uses less digits than its factorization.

9999888584487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333296194832.

The product of its digits is 120394874880, while the sum is 96.

The spelling of 9999888584487 in words is "nine trillion, nine hundred ninety-nine billion, eight hundred eighty-eight million, five hundred eighty-four thousand, four hundred eighty-seven".