9889910408 has 32 divisors (see below), whose sum is σ = 21876303360. Its totient is φ = 4101805440.

The previous prime is 9889910389. The next prime is 9889910413. The reversal of 9889910408 is 8040199889.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2846741 + ... + 2850212.

It is an arithmetic number, because the mean of its divisors is an integer number (683634480).

Almost surely, 2^9889910408 is an apocalyptic number.

It is an amenable number.

9889910408 is an abundant number, since it is smaller than the sum of its proper divisors (11986392952).

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

9889910408 is a wasteful number, since it uses less digits than its factorization.

9889910408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5696997 (or 5696993 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 56.

The square root of 9889910408 is about 99448.0286783001. The cubic root of 9889910408 is about 2146.4994710301.

The spelling of 9889910408 in words is "nine billion, eight hundred eighty-nine million, nine hundred ten thousand, four hundred eight".