9840880 has 40 divisors (see below), whose sum is σ = 26150112. Its totient is φ = 3373824.

The previous prime is 9840869. The next prime is 9840899. The reversal of 9840880 is 880489.

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

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

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, 8227 + ... + 9346.

Almost surely, 2^9840880 is an apocalyptic number.

It is an amenable number.

9840880 is an abundant number, since it is smaller than the sum of its proper divisors (16309232).

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

9840880 is a wasteful number, since it uses less digits than its factorization.

9840880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17593 (or 17587 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 9840880 is about 3137.0176920126. The cubic root of 9840880 is about 214.2946417445.

It can be divided in two parts, 9 and 840880, that added together give a square (840889 = 917²).

The spelling of 9840880 in words is "nine million, eight hundred forty thousand, eight hundred eighty".