9878004871 has 4 divisors (see below), whose sum is σ = 11289148432. Its totient is φ = 8466861312.

The previous prime is 9878004839. The next prime is 9878004883. The reversal of 9878004871 is 1784008789.

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

It is not a de Polignac number, because 9878004871 - 2⁵ = 9878004839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9878004821) 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, 705571770 + ... + 705571783.

It is an arithmetic number, because the mean of its divisors is an integer number (2822287108).

Almost surely, 2^9878004871 is an apocalyptic number.

9878004871 is a deficient number, since it is larger than the sum of its proper divisors (1411143561).

9878004871 is a wasteful number, since it uses less digits than its factorization.

9878004871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411143560.

The product of its (nonzero) digits is 903168, while the sum is 52.

The square root of 9878004871 is about 99388.1525686035. The cubic root of 9878004871 is about 2145.6378019418.

The spelling of 9878004871 in words is "nine billion, eight hundred seventy-eight million, four thousand, eight hundred seventy-one".