9993864969887 has 8 divisors (see below), whose sum is σ = 10057732048416. Its totient is φ = 9930000573792.

The previous prime is 9993864969839. The next prime is 9993864969901. The reversal of 9993864969887 is 7889694683999.

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

It is a cyclic number.

It is not a de Polignac number, because 9993864969887 - 2¹⁴ = 9993864953503 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9993864969887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9993864969827) 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, 7090598 + ... + 8382380.

It is an arithmetic number, because the mean of its divisors is an integer number (1257216506052).

Almost surely, 2^{9993864969887} is an apocalyptic number.

9993864969887 is a deficient number, since it is larger than the sum of its proper divisors (63867078529).

9993864969887 is a wasteful number, since it uses less digits than its factorization.

9993864969887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341217.

The product of its digits is 91424858112, while the sum is 95.

The spelling of 9993864969887 in words is "nine trillion, nine hundred ninety-three billion, eight hundred sixty-four million, nine hundred sixty-nine thousand, eight hundred eighty-seven".