9940880 has 40 divisors (see below), whose sum is σ = 23244792. Its totient is φ = 3953664.

The previous prime is 9940877. The next prime is 9940907. The reversal of 9940880 is 880499.

It can be written as a sum of positive squares in 4 ways, for example, as 30976 + 9909904 = 176^2 + 3148^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a plaindrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24842 + ... + 25238.

Almost surely, 2^9940880 is an apocalyptic number.

It is an amenable number.

9940880 is an abundant number, since it is smaller than the sum of its proper divisors (13303912).

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

9940880 is a wasteful number, since it uses less digits than its factorization.

9940880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723 (or 717 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 9940880 is about 3152.9161105237. The cubic root of 9940880 is about 215.0180623008.

The spelling of 9940880 in words is "nine million, nine hundred forty thousand, eight hundred eighty".