9993980 has 24 divisors (see below), whose sum is σ = 21712320. Its totient is φ = 3859520.

The previous prime is 9993967. The next prime is 9993989. The reversal of 9993980 is 893999.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9993989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8036 + ... + 9195.

It is an arithmetic number, because the mean of its divisors is an integer number (904680).

Almost surely, 2^9993980 is an apocalyptic number.

It is an amenable number.

9993980 is an abundant number, since it is smaller than the sum of its proper divisors (11718340).

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

9993980 is a wasteful number, since it uses less digits than its factorization.

9993980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17269 (or 17267 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 47.

The square root of 9993980 is about 3161.3256712968. The cubic root of 9993980 is about 215.4002280022.

The spelling of 9993980 in words is "nine million, nine hundred ninety-three thousand, nine hundred eighty".