9887863380 has 48 divisors (see below), whose sum is σ = 28208404224. Its totient is φ = 2587012480.

The previous prime is 9887863331. The next prime is 9887863399. The reversal of 9887863380 is 833687889.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1551516 + ... + 1557875.

It is an arithmetic number, because the mean of its divisors is an integer number (587675088).

Almost surely, 2^9887863380 is an apocalyptic number.

It is an amenable number.

9887863380 is an abundant number, since it is smaller than the sum of its proper divisors (18320540844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9887863380 is a wasteful number, since it uses less digits than its factorization.

9887863380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3109456 (or 3109454 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 60.

The square root of 9887863380 is about 99437.7361970796. The cubic root of 9887863380 is about 2146.3513656200.

The spelling of 9887863380 in words is "nine billion, eight hundred eighty-seven million, eight hundred sixty-three thousand, three hundred eighty".