9900878 has 8 divisors (see below), whose sum is σ = 15993768. Its totient is φ = 4569624.

The previous prime is 9900859. The next prime is 9900883. The reversal of 9900878 is 8780099.

9900878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190376 + ... + 190427.

It is an arithmetic number, because the mean of its divisors is an integer number (1999221).

Almost surely, 2^9900878 is an apocalyptic number.

9900878 is a deficient number, since it is larger than the sum of its proper divisors (6092890).

9900878 is a wasteful number, since it uses less digits than its factorization.

9900878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380818.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 9900878 is about 3146.5660647760. The cubic root of 9900878 is about 214.7292644153.

The spelling of 9900878 in words is "nine million, nine hundred thousand, eight hundred seventy-eight".