9719980 has 24 divisors (see below), whose sum is σ = 20523888. Its totient is φ = 3866688.

The previous prime is 9719977. The next prime is 9719981. The reversal of 9719980 is 899179.

It is a super-2 number, since 2×9719980² = 188956022400800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (9719981) 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, 2707 + ... + 5173.

It is an arithmetic number, because the mean of its divisors is an integer number (855162).

Almost surely, 2^9719980 is an apocalyptic number.

It is an amenable number.

9719980 is an abundant number, since it is smaller than the sum of its proper divisors (10803908).

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

9719980 is a wasteful number, since it uses less digits than its factorization.

9719980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673 (or 2671 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 43.

The square root of 9719980 is about 3117.6882461208. The cubic root of 9719980 is about 213.4134518951.

It can be divided in two parts, 97199 and 80, that added together give a palindrome (97279).

The spelling of 9719980 in words is "nine million, seven hundred nineteen thousand, nine hundred eighty".