9907976 has 32 divisors (see below), whose sum is σ = 20442240. Its totient is φ = 4473408.

The previous prime is 9907951. The next prime is 9907993. The reversal of 9907976 is 6797099.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a self number, because there is not a number n which added to its sum of digits gives 9907976.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3875 + ... + 5901.

It is an arithmetic number, because the mean of its divisors is an integer number (638820).

Almost surely, 2^9907976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9907976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10221120).

9907976 is an abundant number, since it is smaller than the sum of its proper divisors (10534264).

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

9907976 is a wasteful number, since it uses less digits than its factorization.

9907976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2093 (or 2089 counting only the distinct ones).

The product of its (nonzero) digits is 214326, while the sum is 47.

The square root of 9907976 is about 3147.6937589289. The cubic root of 9907976 is about 214.7805657322.

The spelling of 9907976 in words is "nine million, nine hundred seven thousand, nine hundred seventy-six".